Canadian Wildlife Species at Risk 2016: chapter 12

Record of Reviews of Classification

A short history is provided for each wildlife species that has been reassessed by COSEWIC, including date(s) of assessment and the status assigned.

Acadian Flycatcher
Designated Endangered in April 1994. Status re-examined and confirmed in November 2000 and April 2010.
Alaskan Brook Lamprey
Species considered in April 1990 and in April 2006 and placed in the Data Deficient category.
Allegheny Mountain Dusky Salamander
The species was considered a single unit and designated Special Concern in April 1998. Status re-examined and designated Threatened in November 2001. Split into two populations in April 2007. The original designation was de-activated.
Allegheny Mountain Dusky Salamander (Carolinian population)
The species was considered a single unit and designated Special Concern in April 1998 . Split into two populations in April 2007. The Carolinian population was designated Endangered in April 2007.
Allegheny Mountain Dusky Salamander (Great Lakes / St. Lawrence population)
The species was considered a single unit and designated Special Concern in April 1998. Status re-examined and designated Threatened in November 2001. Split into two populations in April 2007. The Great Lakes / St. Lawrence population was designated Threatened in April 2007.
American Badger
Designated Not at Risk in April 1979. The original Canada-wide designation was de-activated in May 2000 when the American Badger was split according to subspecies.
American Badger jacksoni subspecies
The species was considered a single unit and designated Not at Risk in 1979. Each subspecies was given a separate designation in May 2000. The jacksoni subspecies was designated Endangered. Status re-examined and confirmed in November 2012.
American Badger jeffersonii subspecies
The species was considered a single unit and designated Not at Risk in 1979. Each subspecies was given a separate designation in May 2000; the jeffersonii subspecies was designated Endangered. The jeffersonii subspecies was further split into two populations (Western and Eastern populations) in November 2012. The original designation was de-activated.
American Badger jeffersonii subspecies (Eastern population)
The species was considered a single unit and designated Not at Risk in 1979. Each subspecies was given a separate designation in May 2000; the jeffersonii subspecies was designated Endangered. In November 2012, the jeffersonii subspecies was further split into two populations (Western and Eastern populations), and the Eastern population was designated Endangered.
American Badger jeffersonii subspecies (Western population)
The species was considered a single unit and designated Not at Risk in 1979. Each subspecies was given a separate designation in May 2000; the jeffersonii subspecies was designated Endangered. In November 2012, the jeffersonii subspecies was further split into two populations (Western and Eastern populations), and the Western population was designated Endangered.
American Badger taxus subspecies
The species was considered a single unit and designated Not at Risk in 1979. Each subspecies was given a separate designation in May 2000; the taxus subspecies was designated Not at Risk. Status re-examined and designated Special Concern in November 2012.
American Black Bear
Designated Not at Risk in April 1998 and in April 1999.
American Chestnut
Designated Threatened in April 1987. Status re-examined and designated Endangered in November 2004.
American Columbo
Designated Special Concern in April 1993. Status re-examined and designated Endangered in April 2006.
American Eel
Designated Special Concern in April 2006. Status re-examined and designated Threatened in May 2012.
American Ginseng
Designated Threatened in April 1988. Status re-examined and designated Endangered in April 1999. Status re-examined and confirmed in May 2000.
American Marten (Newfoundland population)
Designated Not at Risk in April 1979. Status re-examined and designated Threatened in April 1986. Status re-examined and designated Endangered in April 1996 and in May 2000. Status re-examined and designated Threatened in April 2007.
American Water-willow
Designated Threatened in April 1984. Status re-examined and confirmed in May 2000.
American White Pelican
Designated Threatened in April 1978. Status re-examined and designated Not at Risk in April 1987.
Ancient Murrelet
Designated Special Concern in April 1993. Status re-examined and confirmed in November 2004 and November 2014.
Anticosti Aster
Designated Threatened in April 1990. Status re-examined and confirmed in May 2000.
Athabasca Thrift
Designated Threatened in April 1981. Status re-examined and designated Special Concern in April 1999. Status re-examined and confirmed in May 2002.
Atlantic Cod
Designated Special Concern in April 1998. Split into four populations in May 2003. The original designation was de-activated.
Atlantic Cod (Arctic Lakes population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Arctic population was designated Special Concern. When the Arctic population was further split into two populations (Arctic Lakes population and Arctic Marine population) in April 2010, the Arctic Lakes population was designated Special Concern, and the original Arctic population was de-activated.
Atlantic Cod (Arctic Marine population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Arctic population was designated Special Concern. When the Arctic population was further split into two populations (Arctic Lakes population and Arctic Marine population) in April 2010, the Arctic Marine population was designated Data Deficient, and the original Arctic population was de-activated.
Atlantic Cod (Arctic population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Arctic population was designated Special Concern. Further split into two populations (Arctic Lakes population and Arctic Marine population) in April 2010. The original Arctic population was de-activated.
Atlantic Cod (Laurentian North population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Laurentian North population was designated Threatened. Status re-examined and designated Endangered in April 2010.
Atlantic Cod (Laurentian South population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Maritimes population was designated Special Concern. When the Maritimes population was further split into two populations (Laurentian South population and Southern population) in April 2010, the Laurentian South population was designated Endangered, and the original Maritimes population was de-activated.
Atlantic Cod (Maritimes population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Maritimes population was designated Special Concern. Further split into two populations (Laurentian South population and Southern population) in April 2010. The original Maritimes population was de-activated.
Atlantic Cod (Newfoundland and Labrador population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Newfoundland and Labrador population was designated Endangered. Status re-examined and confirmed in April 2010.
Atlantic Cod (Southern population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Maritimes population was designated Special Concern. When the Maritimes population was further split into two populations (Laurentian South population and Southern population) in April 2010, the Southern population was designated Endangered, and the original Maritimes population was de-activated.
Atlantic Salmon (Inner Bay of Fundy population)
Designated Endangered in May 2001. Status re-examined and confirmed in April 2006 and November 2010.
Atlantic Salmon (Lake Ontario population)
Last reported in 1898. Designated Extirpated in April 2006. Status re-examined and designated Extinct in November 2010.
Atlantic Walrus
The Atlantic Walrus in Canada was originally treated by COSEWIC as two separate populations: Eastern Arctic population (Not at Risk in April 1987 and May 2000) and Northwest Atlantic population (Extirpated in April 1987 and May 2000). In April 2006, COSEWIC included both populations in a single designatable unit for Atlantic Walrus in Canada, and the species was designated Special Concern.
Atlantic Walrus (Eastern Arctic population)
The Eastern Arctic population was designated Not at Risk in April 1987 and in May 2000. In April 2006, COSEWIC included the Eastern Arctic portion of the Atlantic Walrus as part of a single designatable unit for Atlantic Walrus in Canada. The original designation was de-activated.
Atlantic Walrus (Northwest Atlantic population)
The Northwest Atlantic population was designated Extirpated in April 1987 and in May 2000. In April 2006, COSEWIC included the extirpated portion of the Atlantic Walrus as part of a single designatable unit for Atlantic Walrus in Canada. The original designation was de-activated.
Atlantic Whitefish
Designated Endangered in April 1984. Status re-examined and confirmed in November 2000 and November 2010.
Atlantic Wolffish
Designated Special Concern in November 2000. Status re-examined and confirmed in November 2012.
Aurora Trout
Designated Endangered in April 1987. Status re-examined and confirmed in May 2000.  Designation de-activated in May 2011 because it was concluded that this species is ineligible for assessment.
Baikal Sedge
Designated Threatened in May 2005. Status re-examined and designated Special Concern in April 2016.
Baird's Sparrow
Designated Threatened in April 1989. Status re-examined and designated Not at Risk in April 1996. Status re-examined and designated Special Concern in May 2012.
Banded Cord-moss
Designated Special Concern in May 2005. Status re-examined and confirmed in May 2015.
Banded Killifish (Newfoundland populations)
Designated Special Concern in April 1989. Status re-examined and confirmed in May 2003 and May 2014.
Banff Longnose Dace
Extinct since 1986. Designated Extinct in April 1987. Status re-examined and confirmed in May 2000.
Banff Springs Snail
Designated Threatened in April 1997. Status re-examined and designated Endangered in May 2000 and April 2008.
Barn Owl
The species was considered a single unit and designated Special Concern in April 1984. In April 1999, the Western and Eastern populations were assessed separately. The original designation for the Canadian range of the Barn Owl was de-activated.
Barn Owl (Eastern population)
The species was considered a single unit and designated Special Concern in April 1984. In April 1999, the Western and Eastern populations were assessed separately. The Eastern population was designated Endangered. Status re-examined and confirmed in May 2000 and November 2010.
Barn Owl (Western population)
The species was considered a single unit and designated Special Concern in April 1984. In April 1999, the Western and Eastern populations were assessed separately. The Western population was designated Special Concern. Status re-examined and confirmed in November 2001. Status re-examined and designated Threatened in November 2010.
Barrow's Goldeneye (Eastern population)
Designated Special Concern in November 2000. Status re-examined and confirmed in May 2011.
Bashful Bulrush
Designated Special Concern in April 1986. Status re-examined and designated Endangered in May 2000.
Bear's-foot Sanicle
Designated Endangered in May 2001. Status re-examined and designated Threatened in November 2015.
Bearded Owl-clover
Designated Endangered in April 1998. Status re-examined and confirmed in May 2000 and November 2011.
Bearded Seal
Designated Not at Risk in April 1994. Species considered in April 2007 and placed in the Data Deficient category.
Behr's Hairstreak
Designated Threatened in November 2000. Status re-examined and designated Endangered in May 2012.
Beluga Whale (Cumberland Sound population)
The Southeast Baffin Island-Cumberland Sound population was designated Endangered in April 1990. In May 2004, the structure of the population was redefined: the Southeast Baffin Island animals (formerly part of the Southeast Baffin Island-Cumberland Sound population) were included as part of the Western Hudson Bay population. The newly defined "Cumberland Sound population" was designated Threatened in May 2004.
Beluga Whale (Eastern Beaufort Sea population)
Designated Not at Risk in April 1985 and in May 2004.
Beluga Whale (Eastern High Arctic - Baffin Bay population)
Designated Special Concern in April 1992. Status re-examined and confirmed in May 2004.
Beluga Whale (Eastern Hudson Bay population)
Designated Threatened in April 1988. Status re-examined and designated Endangered in May 2004.
Beluga Whale (Southeast Baffin Island-Cumberland Sound population)
Designated Endangered in April 1990. In May 2004, both the Southeast Baffin Island-Cumberland Sound population and the Western Hudson Bay population (original) were de-activated to denote transfer of the Southeast Baffin Island animals from the former population grouping to the latter. The two new populations are called: Cumberland Sound population and Western Hudson Bay population.
Beluga Whale (St. Lawrence Estuary population)
Designated Endangered in April 1983. Status re-examined and confirmed in April 1997. Status re-examined and designated Threatened in May 2004. Status re-examined and designated Endangered in November 2014.
Beluga Whale (Ungava Bay population)
Designated Endangered in April 1988. Status re-examined and confirmed in May 2004.
Beluga Whale (Western Hudson Bay population)
The Western Hudson Bay population (original) was designated Not at Risk in April 1993. In May 2004, the structure of the population was redefined: the Southeast Baffin Island animals (formerly part of the Southeast Baffin Island-Cumberland Sound population) were included as part of the Western Hudson Bay population. The Western Hudson Bay population was designated Special Concern in May 2004.
Beluga Whale (Western Hudson Bay population, original designation)
Designated Not at Risk in April 1993. In May 2004, both the Southeast Baffin Island-Cumberland Sound population and the Western Hudson Bay population (original) were de-activated to denote transfer of the Southeast Baffin Island animals from the former population grouping to the latter. The two new populations are called: Cumberland Sound population and Western Hudson Bay population.
Bering Cisco
Species considered in April 1990 and placed in the Data Deficient category. Status re-examined and designated Special Concern in November 2004.
Bering Wolffish
Designated Special Concern in April 1989. Species considered in November 2002 and placed in the Data Deficient category.
Bicknell's Thrush
Designated Special Concern in April 1999. Status re-examined and designated Threatened in November 2009.
Bigmouth Buffalo
The species was considered a single unit and designated Special Concern in April 1989. Split into two populations in April 2008 to allow a separate designation of the Bigmouth Buffalo (Great Lakes - Upper St.Lawrence populations).  Bigmouth Buffalo (Saskatchewan – Nelson River populations) was assessed in April 2009. The original designation was de-activated.
Bigmouth Buffalo (Great Lakes - Upper St. Lawrence populations)
The species was considered a single unit and designated Special Concern in April 1989. Split into two populations in April 2008 to allow a separate designation of the Bigmouth Buffalo (Great Lakes - Upper St. Lawrence populations).  The Bigmouth Buffalo (Great Lakes – Upper St. Lawrence populations) was designated Not at Risk in April 2008.
Bigmouth Buffalo (Saskatchewan - Nelson River populations)
The species was considered a single unit and designated Special Concern in April 1989. Split into two populations in April 2008 to allow a separate designation of the Bigmouth Buffalo (Great Lakes - Upper St. Lawrence populations). The Bigmouth Buffalo (Saskatchewan – Nelson River populations) was not assessed in April 2008; it retained the Special Concern designation of the original Bigmouth Buffalo. The population was designated Special Concern in April 2009.
Bigmouth Shiner
Designated Special Concern in April 1985. Status re-examined and designated Not at Risk in November 2003.
Bird's-foot Violet
Designated Threatened in April 1990. Status re-examined and designated Endangered in May 2002.
Black Buffalo
Designated Special Concern in April 1989. Species considered in April 2007 and placed in the Data Deficient category.
Black Redhorse
Designated Threatened in April 1988. Status re-examined and confirmed in May 2005 and May 2015.
Black Tern
Designated Not at Risk in April 1988 and in April 1996.
Black-footed Ferret
Extirpated by 1974. Designated Extirpated in April 1978. Status re-examined and confirmed in May 2000 and in April 2009.
Black-tailed Prairie Dog
Designated Special Concern in April 1978. Status re-examined and confirmed in April 1988, April 1999 and November 2000. Status re-examined and designated Threatened in November 2011.
Blackfin Cisco
Designated Threatened in April 1988. Species considered in April 2007 and placed in the Data Deficient category.
Blackline Prickleback
Designated Special Concern in April 1989. Species considered in May 2003 and placed in the Data Deficient category.
Blackstripe Topminnow
Designated Special Concern in April 1985. Status re-examined and confirmed in May 2001 and May 2012.
Blanchard's Cricket Frog
Designated Endangered in April 1990. Status re-examined and confirmed in May 2001 and May 2011.
Blanding's Turtle (Nova Scotia population)
Designated Threatened in April 1993. Status re-examined and designated Endangered in May 2005.
Blue Ash
Designated Threatened in April 1983. Status re-examined and designated Special Concern in November 2000. Status re-examined and designated Threatened in November 2014.
Blue Racer
Designated Endangered in April 1991. Status re-examined and confirmed in May 2002 and May 2012.
Blue Walleye
Extinct since 1965. Designated Extinct in April 1985. Status re-examined and confirmed in May 2000.
Blue Whale
The species was considered a single unit and designated Special Concern in April 1983. In May 2002, the species was split into two populations: Blue Whale (Atlantic population) and Blue Whale (Pacific population). The Atlantic population and the Pacific populations were both designated Endangered in May 2002. The original designation for Blue Whale was de-activated.
Blue Whale (Atlantic population)
The species was considered a single unit and designated Special Concern in April 1983. Split into two populations in May 2002. The Atlantic population was designated Endangered in May 2002. Status re-examined and confirmed in May 2012.
Blue Whale (Pacific population)
The species was considered a single unit and designated Special Concern in April 1983. Split into two populations in May 2002. The Pacific population was designated Endangered in May 2002. Status re-examined and confirmed in May 2012.
Blue-grey Taildropper
Designated Endangered in April 2006. Status re-examined and designated Threatened April 2016.
Bluehearts
Designated Threatened in April 1985. Status re-examined and designated Endangered in April 1998. Status re-examined and confirmed in May 2000 and November 2011.
Blunt-lobed Woodsia
Designated Threatened in April 1994. Status re-examined and designated Endangered in May 2000. Status re-examined and designated Threatened in April 2007.
Bocaccio
Designated Threatened in November 2002. Status re-examined and designated Endangered in November 2013.
Bolander's Quillwort
Designated Special Concern in April 1995. Status re-examined and designated Threatened in April 2006.
Boreal Felt Lichen (Atlantic population)
Designated Endangered in May 2002. Status re-examined and confirmed in November 2014.
Boreal Felt Lichen (Boreal population)
Designated Special Concern in May 2002. Status re-examined and confirmed in November 2014.
Bowhead Whale (Bering-Chukchi-Beaufort population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. The Western Arctic population was designated Endangered in April 1986. The population was renamed to "Bering-Chukchi-Beaufort population" and designated Special Concern in May 2005. Status re-examined and confirmed in April 2009.
Bowhead Whale (Davis Strait-Baffin Bay population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. The Eastern Arctic population was not re-evaluated in April 1986, but retained the Endangered status of the original "Eastern and Western Arctic populations". The Eastern Arctic population was further split into two populations (Hudson Bay-Foxe Basin population and Davis Strait-Baffin Bay population) in May 2005, and the Davis Strait-Baffin Bay population was designated Threatened. In April 2009, the Hudson Bay-Foxe Basin population and the Davis Strait-Baffin Bay population were considered a single unit (Eastern Canada-West Greenland population) and the original Davis Strait-Baffin Bay population was de-activated.
Bowhead Whale (Eastern and Western Arctic populations)
Designated Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow a separate designation for the Western Arctic population in April 1986. The original designation was de-activated.
Bowhead Whale (Eastern Arctic population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. Eastern Arctic population was not re-evaluated, but retained the Endangered status of the original "Eastern and Western Arctic populations". The Eastern Arctic population was further split into two populations (Hudson Bay-Foxe Basin population and Davis Strait-Baffin Bay population) in May 2005, and the original designation was de-activated.
Bowhead Whale (Eastern Canada-West Greenland population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. The Eastern Arctic population was not re-evaluated in April 1986, but retained the Endangered status of the original "Eastern and Western Arctic populations". The Eastern Arctic population was further split into two populations (Hudson Bay-Foxe Basin population and Davis Strait-Baffin Bay population) in May 2005, and each was designated Threatened. In April 2009, the Hudson Bay-Foxe Basin population and the Davis Strait-Baffin Bay population were considered a single unit and this Eastern Canada-West Greenland population was designated Special Concern.
Bowhead Whale (Hudson Bay-Foxe Basin population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. The Eastern Arctic population was not re-evaluated in April 1986, but retained the Endangered status of the original "Eastern and Western Arctic populations". The Eastern Arctic population was further split into two populations (Hudson Bay-Foxe Basin population and Davis Strait-Baffin Bay population) in May 2005, and the Hudson Bay-Foxe Basin population was designated Threatened.  In April 2009, the Hudson Bay-Foxe Basin population and the Davis Strait-Baffin Bay population were considered a single unit (Eastern Canada-West Greenland population) and the original Hudson Bay-Foxe Basin population was de-activated.
Branched Bartonia
Designated Special Concern in April 1992. Status re-examined and designated Threatened in November 2003.
Bridle Shiner
Designated Special Concern in April 1999. Status re-examined and confirmed in November 2001 and May 2013.
Brindled Madtom
Designated Special Concern in April 1985. Status re-examined and designated Not at Risk in May 2001.
Buffalograss
Designated Special Concern in April 1998. Status re-examined and designated Threatened in November 2001. Status re-examined and designated Special Concern in November 2011.
Burrowing Owl
Designated Threatened in April 1979. Status re-examined and confirmed in April 1991. Status re-examined and designated Endangered in April 1995. Status re-examined and confirmed in May 2000 and in April 2006.
Butler's Gartersnake
Designated Special Concern in April 1999. Status re-examined and designated Threatened in November 2001. Status re-examined and designated Endangered in November 2010.
Canada Lynx
Designated Not at Risk in April 1989 and in May 2001.
Caribou (Atlantic-Gaspésie population)
Atlantic-Gaspésie population designated Threatened in April 1984. Status re-examined and designated Endangered in May 2000.Status re-examined and confirmed in May 2002 and November 2014.
Caribou (Boreal population)
The Boreal population was designated Threatened in May 2000. This newly-defined population is comprised of a portion of the de-activated "Western population" and all of the de-activated "Labrador-Ungava population". Status re-examined and confirmed in May 2002 and November 2014.
Caribou (Central Mountain population)
Following the Designatable Unit report on caribou (COSEWIC 2011), a new population structure was proposed and accepted by COSEWIC. This resulted in the new Central Mountain population, composed of 12 subpopulations from the previous Southern Mountain population of Woodland Caribou (COSEWIC 2002). The Central Mountain population of Caribou was designated Endangered in May 2014.
Caribou (Newfoundland population)
Newfoundland population was designated Not at Risk in April 1984. Status re-examined and confirmed in May 2000 and in May 2002. Status re-examined and designated Special Concern in November 2014.
Caribou (Northern Mountain population)
The Northern Mountain population was designated Not at Risk in May 2000. This population was formerly designated as part of the "Western population" (now de-activated). Status re-examined and designated Special Concern in May 2002. Following the Designatable Unit report on Caribou (COSEWIC 2011), a new population structure was proposed and accepted by COSEWIC. This new Northern Mountain population is composed of all 36 subpopulations in the previous Northern Mountain population of Woodland Caribou in addition to 9 subpopulations from the previous (2002) Southern Mountain population of Woodland Caribou. The Northern Mountain population was designated Special Concern in May 2014.
Caribou (Southern Mountain population)
The Southern Mountain population was designated Threatened in May 2000. This population was formerly designated as part of the "Western population" (now de-activated). Status re-examined and confirmed in May 2002. Following the Designatable Unit report on caribou (COSEWIC 2011), a new population structure was proposed and accepted by COSEWIC. This resulted in the new Southern Mountain population, composed of 17 subpopulations from the former Southern Mountain population of Woodland Caribou (COSEWIC 2002). The remaining subpopulations were assigned to the new Central and Northern Mountain populations.The Southern Mountain population was designated Endangered in May 2014.
Caribou dawsoni subspecies
Extinct by the 1920s. Designated Extinct in April 1984. Status re-examined and confirmed in May 2000.
Carmine Shiner
Designated Special Concern in April 1994. Status re-examined and designated Threatened in November 2001 and in April 2006.
Caspian Tern
Designated Special Concern in April 1978. Status re-examined and designated Not at Risk in April 1999.
Central Stoneroller
Designated Special Concern in 1985. Status re-examined and designated Not at Risk in 1998.
Cerulean Warbler
Designated Special Concern in April 1993. Status re-examined and confirmed in May 2003. Status re-examined and designated Endangered in November 2010.
Channel Darter
Designated Threatened in April 1993. Status re-examined and confirmed in May 2002.
Chestnut Lamprey
The species was considered a single unit and designated Special Concern in April 1991. Split into two populations in November 2010. The original designation was de-activated.
Chestnut Lamprey (Great Lakes - Upper St. Lawrence populations)
The species was considered a single unit and designated Special Concern in April 1991. Split into two populations in November 2010. The "Great Lakes - Upper St. Lawrence populations" unit was considered in November 2010 and placed in the Data Deficient category.
Chestnut Lamprey (Saskatchewan - Nelson River populations)
The species was considered a single unit and designated Special Concern in April 1991. Split into two populations in November 2010. The "Saskatchewan - Nelson River populations" unit was was considered in November 2010 and placed in the Data Deficient category.
Chinook Salmon (Okanagan population)
Designated Endangered in an emergency assessment on 4 May 2005. Status re-examined and designated Threatened in April 2006.
Chiselmouth
Species considered in April 1997 and placed in the Data Deficient category. Re-examined in May 2003 and designated Not at Risk.
Climbing Prairie Rose
Designated Special Concern in April 1986. Status re-examined and designated Threatened in May 2002. Status re-examined and designated Special Concern in May 2003.
Coastal Giant Salamander
Designated Special Concern in April 1989. Status re-examined and designated Threatened in November 2000 and May 2014.
Coastal Tailed Frog
Designated Special Concern in May 2000. Status re-examined and confirmed in November 2011.
Coastal Wood Fern
Designated Special Concern in April 1998. Status re-examined and confirmed in November 2001.
Coastrange Sculpin (Cultus population)
Designated Special Concern in April 1997. Status re-examined and designated Threatened in November 2000 and in April 2010.
Coeur d'Alene Salamander
Designated Special Concern in April 1998. Status re-examined and confirmed in November 2001 and November 2007.
Colicroot
Designated Threatened in April 1988. Status re-examined and confirmed in November 2000. Status re-examined and designated Endangered in November 2015.
Columbia Sculpin
Designated Special Concern in May 2000. Status re-examined and confirmed in November 2010.
Columbian Carpet Moss
Designated Special Concern in May 2004. Status re-examined and confirmed in November 2014.
Common Hoptree
Designated Special Concern in April 1984. Status re-examined and designated Threatened in November 2002. Status re-examined and designated Special Concern in November 2015.
Cooper's Hawk
Designated Special Concern in April 1983. Status re-examined and designated Not at Risk in April 1996.
Copper Redhorse
Designated Threatened in April 1987. Status re-examined and designated Endangered in November 2004 and May 2014.
Cougar (Eastern population)
Designated Endangered in April 1978. Species considered in April 1998 and placed in the Data Deficient category.
Crooked-stem Aster
Designated Special Concern in April 1999. Status re-examined and designated Threatened in May 2002. Status re-examined and designated Special Concern in November 2012.
Cryptic Paw Lichen
Designated Special Concern in April 1995 and in April 2006.
Cucumber Tree
Designated Endangered in April 1984. Status re-examined and confirmed Endangered in April 1999, May 2000, and April 2010.
Cusk
Designated Threatened in May 2003. Status re-examined and designated Endangered in November 2012.
Cutlip Minnow
Designated Not at Risk in April 1994. Status re-examined and designated Special Concern in November 2013.
Dakota Skipper
Designated Threatened in November 2003. Status re-examined and designated Endangered in May 2014.
Deepwater Cisco
Extinct since 1952. Designated Extinct in April 1988. Status re-examined and confirmed in May 2000.
Deepwater Sculpin (Great Lakes - Western St. Lawrence populations)
The "Great Lakes - Western St. Lawrence populations" unit (which includes the former "Great Lakes populations" unit, designated Threatened in April 1987) was designated Special Concern in April 2006.
Deepwater Sculpin (Great Lakes populations)
Designated Threatened in April 1987. The designation of the Great Lakes populations unit was de-activated in April 2006. The former Great Lakes populations unit is contained within the Great Lakes - Western St. Lawrence populations unit.
Deerberry
Designated Threatened in April 1994. Status re-examined and confirmed in November 2000.
Deltoid Balsamroot
Designated in April 1996 as Endangered. Status re-examined and confirmed Endangered in May 2000 and in April 2009.
Dense Blazing Star
Designated Special Concern in April 1988. Status re-examined and designated Threatened in May 2001. Status re-examined and confirmed in April 2010.
Desert Nightsnake
Designated Endangered in May 2001 and May 2011.
Dolphin and Union Caribou
The original designation considered a single unit that included Peary Caribou, Rangifer tarandus pearyi, and what is now known as the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. It was assigned a status of Threatened in April 1979. Split to allow designation of three separate populations in 1991: Banks Island (Endangered), High Arctic (Endangered) and Low Arctic (Threatened) populations. In May 2004 all three population designations were de-activated, and the Peary Caribou, Rangifer tarandus pearyi, was assessed separately from the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. The Dolphin and Union Caribou is comprised of a portion of the former "Low Arctic population", and it was designated Special Concern in May 2004.
Dromedary Jumping-slug
Designated Threatened in May 2003. Status re-examined and confirmed in May 2014.
Drooping Trillium
Designated Endangered in April 1996. Status re-assessed and confirmed in May 2000 and in April 2009.
Dun Skipper vestris subspecies
Designated Threatened in November 2000. Status re-examined and confirmed in May 2013.
Dwarf Hackberry
Designated Special Concern in April 1985. Status re-examined and designated Threatened in November 2003.
Dwarf Lake Iris
Designated Threatened in November 2004. Status re-examined and designated Special Concern in November 2010.
Dwarf Wedgemussel
Extirpated by 1968. Designated Extirpated in April 1999. Status re-examined and confirmed in May 2000 and November 2009.
Dwarf Woolly-heads (Southern Mountain population)
Designated Endangered in November 2003. Renamed Dwarf Woolly-heads (Southern Mountain population) in April 2006 and designated Endangered.
Eastern Bluebird
Designated Special Concern in April 1984. Status re-examined and designated Not at Risk in April 1996.
Eastern Box Turtle
Species considered in May 2002 and placed in the Data Deficient category. Status re-examined and designated Extirpated in November 2014.
Eastern Foxsnake
The species was considered a single unit and designated Threatened in April 1999 and May 2000. Split into two populations in April 2008. The original designation was de-activated.
Eastern Foxsnake (Carolinian population)
The species was considered a single unit and designated Threatened in April 1999 and May 2000. Split into two populations in April 2008. The Carolinian population was designated Endangered in April 2008.
Eastern Foxsnake (Great Lakes / St. Lawrence population)
The species was considered a single unit and designated Threatened in April 1999 and May 2000. Split into two populations in April 2008. The Great Lakes / St. Lawrence population was designated Endangered in April 2008.
Eastern Hog-nosed Snake
Designated Special Concern in April 1997. Status re-examined and designated Threatened in November 2001 and November 2007.
Eastern Lilaeopsis
Designated Special Concern in April 1987 and in May 2004.
Eastern Milksnake
Designated Special Concern in May 2002. Status re-examined and confirmed in May 2014.
Eastern Mole
Designated Special Concern in April 1980. Status re-examined and confirmed in April 1998, November 2000, and November 2010.
Eastern Mountain Avens
Designated Endangered in April 1986. Status re-examined and confirmed Endangered in April 1999, May 2000, and April 2010.
Eastern Musk Turtle
Designated Threatened in May 2002. Status re-examined and designated Special Concern in November 2012.
Eastern Persius Duskywing
Designated Endangered in April 2006. Status re-examined and confirmed in April 2016.
Eastern Prairie Fringed-orchid
Designated Special Concern in April 1986. Status re-examined and designated Endangered in May 2003.
Eastern Prickly Pear Cactus
Designated Endangered in April 1985. Status re-examined and confirmed Endangered in April 1998, May 2000, and April 2010.
Eastern Ribbonsnake (Atlantic population)
Designated Threatened in May 2002. Status re-examined and confirmed in November 2012.
Eastern Ribbonsnake (Great Lakes population)
Designated Special Concern in May 2002. Status re-examined and confirmed in November 2012.
Eastern Sand Darter
The species was considered a single unit and designated Threatened in April 1994 and November 2000. Split into two populations in November 2009. The original designation was de-activated.
Eastern Sand Darter (Ontario populations)
The species was considered a single unit and designated Threatened in April 1994 and November 2000. When the species was split into separate units in November 2009, the "Ontario populations" unit was designated Threatened.
Eastern Sand Darter (Quebec populations)
The species was considered a single unit and designated Threatened in April 1994 and November 2000. When the species was split into separate units in November 2009, the "Quebec populations" unit was designated Threatened.
Eastern Tiger Salamander
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations : Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with different populations that received separate designations. The original Tiger Salamander population designations were de-activated.
Eastern Tiger Salamander (Carolinian population)
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations: Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with two different populations that received separate designations. The Carolinian population of the Eastern Tiger Salamander was assessed as Extirpated.
Eastern Tiger Salamander (Prairie population)
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations: Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with two different populations that received separate designations. The Prairie population of the Eastern Tiger Salamander was designated Endangered in November 2013.
Eastern Wolf
In 1999, the Eastern Grey Wolf (Canis lupus lycaon) was considered a subspecies of the Grey Wolf and was placed in the Data Deficient category.  Status was re-examined (as Eastern Wolf, Canis lupus lycaon) and designated Special Concern in May 2001. New genetic analyses indicate that the Eastern Wolf is not a subspecies of Grey Wolf.  In May 2015, a new wildlife species, Eastern Wolf (Canis sp. cf. lycaon) was designated Threatened.
Eastern Yellow-bellied Racer
Designated Special Concern in April 1991. Status re-examined and designated Threatened in November 2004 and November 2015.
Eelgrass Limpet
Extinct since 1929. Designated Extinct in April 1996. Status re-examined and confirmed in May 2000.
Engelmann's Quillwort
Designated Endangered in April 1992. Status re-examined and confirmed in May 2001.
Enos Lake Benthic Threespine Stickleback
Original designation (including both Benthic and Limnetic species) was Threatened in April 1988. Split into two species when re-examined in November 2002 and the Enos Lake Benthic Threespine Stickleback was designated Endangered. Status re-examined and confirmed in May 2012.
Enos Lake Limnetic Threespine Stickleback
Original designation (including both Benthic and Limnetic species) was Threatened in April 1988. Split into two species when re-examined in November 2002 and the Enos Lake Limnetic Threespine Stickleback was designated Endangered. Status re-examined and confirmed in May 2012.
Enos Lake Threespine Sticklebacks
Designated Threatened in April 1988. Split into two species when re-examined in November 2002: Enos Lake Benthic Threespine Stickleback and Enos Lake Limnetic Threespine Stickleback. The original designation was de-activated.
Ermine haridarum subspecies
Designated Special Concern in April 1984. Status re-examined and designated Threatened in May 2001 and May 2015.
Eskimo Curlew
Designated Endangered in April 1978. Status re-examined and confirmed Endangered in May 2000 and November 2009.
Eulachon (Nass / Skeena Rivers population)
Designated Threatened in May 2011. Status re-examined and designated Special Concern in May 2013.
False Hop Sedge
Designated Threatened in April 1997. Status re-examined and designated Endangered in May 2000 and November 2011.
False Rue-anemone
Designated Special Concern in April 1990. Status re-examined and designated Threatened in May 2005.
Fernald's Braya
Designated Threatened in April 1997. Status re-examined and confirmed in May 2000. Status re-examined and designated Endangered in November 2012.
Fernald's Milk-vetch
Designated Special Concern in April 1997. Status re-examined and confirmed in November 2001.
Ferruginous Hawk
Designated Threatened in April 1980. Status re-examined and designated Special Concern in April 1995. Status re-examined and designated Threatened in April 2008.
Fin Whale
The species was considered a single unit and designated Special Concern in April 1987. Split into two populations in May 2005. The original designation was de-activated.
Fin Whale (Atlantic population)
The species was considered a single unit and designated Special Concern in April 1987. Split into two populations (Atlantic and Pacific) in May 2005. The Atlantic population was designated Special Concern in May 2005.
Fin Whale (Pacific population)
The species was considered a single unit and designated Special Concern in April 1987. Split into two populations (Atlantic and Pacific) in May 2005. The Pacific population was designated Threatened in May 2005.
Five-lined Skink
The species was considered a single unit and designated Special Concern in April 1998. Split into two populations in April 2007. The designation was de-activated in April 2007.
Five-lined Skink (Carolinian population)
The species was considered a single unit and designated Special Concern in April 1998. Split into two populations in April 2007. The Carolinian population was designated Endangered in April 2007.
Five-lined Skink (Great Lakes / St. Lawrence population)
The species was considered a single unit and designated Special Concern in April 1998. Split into two populations in April 2007. The Great Lakes / St. Lawrence population was designated Special Concern in April 2007.
Five-spotted Bogus Yucca Moth
Designated Endangered in April 2006. Status re-examined and confirmed in May 2013.
Flammulated Owl
Designated Special Concern in April 1988. Status re-examined and confirmed Special Concern in April 1999, November 2001, and April 2010.
Flathead Catfish
Species considered in April 1993 and placed in the Data Deficient category. Category re-examined and confirmed in April 2008.
Flooded Jellyskin
Designated Threatened in May 2004. Status re-examined and designated Special Concern in November 2015.
Fourhorn Sculpin (Freshwater form)
Designated Special Concern in April 1989. Species considered in November 2003 and placed in the Data Deficient category.
Fowler's Toad
Designated Special Concern in April 1986. Status re-examined and designated Threatened in April 1999. Status re-examined and confirmed in November 2000. Status re-examined and designated Endangered in April 2010.
Fringed Bat
Designated Special Concern in April 1988. Species considered in May 2004 and placed in the Data Deficient category.
Frosted Elfin
Extirpated by 1988. Designated Extirpated in April 1999. Status re-examined and confirmed in May 2000 and in April 2010.
Frosted Glass-whiskers (Atlantic population)
Designated Special Concern in May 2005. Status re-examined and confirmed in November 2014.
Frosted Glass-whiskers (Pacific population)
Species considered in May 2005 and placed in the Data Deficient category. Status re-examined and confirmed in November 2014.
Furbish's Lousewort
Designated Endangered in April 1980. Status re-examined and confirmed Endangered in April 1998, May 2000, and May 2011.
Gaspé Shrew
Designated Special Concern in April 1988. Status re-examined and designated Not at Risk in April 2006.
Gattinger's Agalinis
Designated Endangered in April 1988. Status re-examined and confirmed in April 1999 and in May 2001.
Ghost Antler Lichen
Designated Special Concern in April 2006. Status re-examined and designated Not at Risk in November 2011.
Giant Helleborine
Designated Threatened in April 1984. Status re-examined and designated Special Concern in April 1998. Status re-examined and designated Not at Risk in November 2015.
Giant Threespine Stickleback
Designated Special Concern in April 1980. Status re-examined and confirmed in November 2013.
Golden Eagle
Designated Not at Risk in April 1987 and in April 1996.
Golden Paintbrush
Designated Threatened in April 1995. Status re-examined and designated Endangered in May 2000 and in November 2007.
Goldencrest
Designated Threatened in April 1987. Status re-examined and confirmed in April 1999 and in May 2000. Status re-examined and designated Special Concern in May 2012.
Goldenseal
Designated Threatened in April 1991. Status re-examined and confirmed in May 2000.
Grass Pickerel
Designated Special Concern in May 2005. Status re-examined and confirmed in November 2014.
Gravel Chub
Last recorded in Thames River drainage, Ontario in 1958. Designated Endangered in April 1985. Status re-examined and designated Extirpated in April 1987. Status re-examined and confirmed in May 2000 and April 2008.
Gray Fox
Designated Special Concern in April 1979. Status re-examined and designated Threatened in May 2002 and November 2015.
Gray Ratsnake
The species was considered a single unit and designated Threatened in April 1998 and in May 2000. Split into two populations in April 2007. The original designation was de-activated in April 2007.
Gray Ratsnake (Carolinian population)
The species was considered a single unit and designated Threatened in April 1998 and in May 2000. Split into two populations in April 2007. The Carolinian population was designated Endangered in April 2007.
Gray Ratsnake (Great Lakes / St. Lawrence population)
The species was considered a single unit and designated Threatened in April 1998 and in May 2000. Split into two populations in April 2007. The Great Lakes / St. Lawrence population was designated Threatened in April 2007.
Great Auk
Believed to be Extinct since 1844. Designated in April 1985 based on historic records only. Status report prepared and approved by COSEWIC in 1994. Status re-examined and confirmed in May 2000.
Great Basin Gophersnake
Designated Threatened in May 2002. Status re-examined and confirmed in May 2013.
Great Basin Spadefoot
Designated Special Concern in April 1998. Status re-examined and designated Threatened in November 2001 and in April 2007.
Great Blue Heron fannini subspecies
Designated Special Concern in April 1997 and April 2008.
Great Grey Owl
Designated Special Concern in April 1979. Status re-examined and confirmed in April 1990. Status re-examined and designated Not at Risk in April 1996.
Great Plains Toad
Designated Special Concern in April 1999. Status re-examined and confirmed in May 2002 and April 2010.
Greater Prairie-Chicken
Last reported in 1987. Designated Endangered in April 1978. Status re-examined and designated Extirpated in April 1990. Status re-examined and confirmed in May 2000 and in November 2009.
Greater Sage-Grouse phaios subspecies
Has not been reported since the 1960s. Designated Extirpated in April 1997. Status re-examined and confirmed in May 2000 and April 2008.
Greater Sage-Grouse urophasianus subspecies
Given conditional designation of Threatened in April 1997. Status re-examined and designated Endangered in April 1998 based on a revised status report. Status re-examined and confirmed in May 2000 and April 2008.
Greater Short-horned Lizard
Designated Special Concern in April 1992. Status re-examined and designated Endangered in April 2007.
Green Sturgeon
Designated Special Concern in April 1987. Status re-examined and confirmed in November 2004 and November 2013.
Greenside Darter
Designated Special Concern in April 1990. Status re-examined and designated Not at Risk in November 2006.
Grey Whale (Atlantic population)
Extirpated before the end of the 1800s. Designated Extirpated in April 1987. Status re-examined and confirmed in May 2000 and November 2009.
Grey Whale (Eastern North Pacific population)
Designated Not at Risk in April 1987. Status re-examined and designated Special Concern in May 2004.
Grizzly Bear
The species was considered a single unit and designated Not at Risk in April 1979. Split into two populations in April 1991 (Prairie population and Northwestern population). The original designation for "Grizzly Bear" across Canada was de-activated. In May 2012, the entire species was re-examined and split into two populations (Western and Ungava populations).
Grizzly Bear (Northwestern population)
The species was considered a single unit and designated Not at Risk in April 1979. Split into two populations in April 1991 (Prairie population and Northwestern population). The Northwestern population was designated Special Concern in April 1991. Status was re-examined and confirmed in May 2002. In May 2012, the entire species was re-examined and the Prairie and Northwestern populations were considered a single unit (Western population). The original Northwestern population was de-activated.
Grizzly Bear (Prairie population)
The species was considered a single unit and designated Not at Risk in April 1979. Split into two populations in April 1991 (Prairie population and Northwestern population). The Prairie population was designated Extirpated in April 1991. Status re-examined and confirmed in May 2000 and in May 2002. In May 2012, the entire species was re-examined and the Prairie and Northwestern populations were considered a single unit (Western population). The original Prairie population was de-activated.
Grizzly Bear (Ungava population)
The species was considered a single unit and designated Not at Risk in April 1979. Split into two populations in April 1991 (Prairie population and Northwestern population). In May 2012, the entire species was re-examined and split into two populations (Western and Ungava populations). The newly-defined Ungava population was designated Extinct in May 2012.
Grizzly Bear (Western population)
The species was considered a single unit and designated Not at Risk in April 1979. Split into two populations in April 1991 (Prairie population and Northwestern population). The Prairie population was designated Extirpated in April 1991. Status re-examined and confirmed in May 2000 and in May 2002. The Northwestern population was designated Special Concern in April 1991 and confirmed in May 2002. In May 2012, the entire species was re-examined and the Prairie and Northwestern populations were considered a single unit. This newly-defined Western population was designated Special Concern in May 2012.
Gulf of St. Lawrence Aster
Designated Special Concern in April 1989. Status re-examined and designated Threatened in May 2004.
Gyrfalcon
Designated Not at Risk in April 1978 and in April 1987.
Hadley Lake Benthic Threespine Stickleback
Extinct in 1999. Designated Extinct in April 1999. Status re-examined and confirmed in May 2000.
Hadley Lake Limnetic Threespine Stickleback
Extinct in 1999. Designated Extinct in April 1999. Status re-examined and confirmed in May 2000.
Hairy Prairie-clover
Designated Threatened in April 1998. Status re-examined and confirmed in May 2000. Status re-examined and designated Special Concern in November 2011.
Haller's Apple Moss
Designated Threatened in November 2001. Status re-examined and confirmed in November 2011.
Harbour Porpoise (Northwest Atlantic population)
The Northwest Atlantic population was designated Threatened in April 1990 and in April 1991. Status re-examined and designated Special Concern in May 2003 and in April 2006.
Harbour Porpoise (Pacific Ocean population)
Species considered in April 1991 and placed in the Data Deficient category. Re-examined in November 2003 and designated Special Concern. Status re-examined and confirmed in April 2016.
Harbour Seal Atlantic and Eastern Arctic subspecies
Species considered in April 1999 and placed in the Data Deficient category. Re-examined in November 2007 and designated Not at Risk.
Harbour Seal Lacs des Loups Marins subspecies
Designated Special Concern in April 1996. Status re-examined and designated Endangered in November 2007.
Hare-footed Locoweed
Designated Special Concern in April 1995. Status re-examined and designated Threatened in May 2014.
Harlequin Duck (Eastern population)
The Eastern population was designated Endangered in April 1990. Status re-examined and designated Special Concern in May 2001 and November 2013.
Heart-leaved Plantain
Designated Endangered in April 1985. Status re-examined and confirmed Endangered in April 1998, May 2000, and November 2011.
Henslow's Sparrow
Designated Threatened in April 1984. Status re-examined and designated Endangered in April 1993. Status re-examined and confirmed in November 2000 and May 2011.
Hill's Pondweed
Designated Special Concern in April 1986. Status re-examined and confirmed in May 2005.
Hoary Mountain-mint
Designated Endangered in April 1986. Status re-examined and confirmed Endangered in April 1998, May 2000, and November 2011.
Hooded Warbler
Designated Threatened in April 1994. Status re-examined and confirmed in November 2000. Status re-examined and designated Not at Risk in May 2012.
Hotwater Physa
Designated Endangered in April 1998. Status re-examined and confirmed in May 2000 and April 2008.
Humpback Whale (North Pacific population)
The "Western North Atlantic and North Pacific populations" were given a single designation of Threatened in April 1982. Split into two populations in April 1985 (Western North Atlantic population and North Pacific population). The North Pacific population designated Threatened in 1985. Status re-examined and confirmed in May 2003. Status re-examined and designated Special Concern in May 2011.
Humpback Whale (Western North Atlantic and North Pacific populations)
The "Western North Atlantic and North Pacific populations" were given a single designation of Threatened in April 1982. Split into two populations in April 1985 (Western North Atlantic population and North Pacific population). The original designation was de-activated.
Humpback Whale (Western North Atlantic population)
The "Western North Atlantic and North Pacific populations" were given a single designation of Threatened in April 1982. Split into two populations in April 1985 (Western North Atlantic population and North Pacific population). Western North Atlantic population designated Special Concern in April 1985. Status re-examined and designated Not at Risk in May 2003.
Illinois Tick-trefoil
No site records since 1888. Designated Extirpated in April 1991. Status re-examined and confirmed in May 2000.
Incurved Grizzled Moss
Designated Extirpated in November 2002. Status re-examined and confirmed in May 2012.
Island Blue
Designated Endangered in November 2000. Status re-examined and confirmed in May 2012.
Island Marble
Extirpated by 1910. Designated Extirpated in April 1999. Status re-examined and confirmed in May 2000 and in April 2010.
Ivory Gull
Designated Special Concern in April 1979. Status re-examined and confirmed in April 1996 and in November 2001. Status re-examined and designated Endangered in April 2006.
Jefferson Salamander
Designated Threatened in November 2000. Status re-examined and designated Endangered in November 2010.
Juniper Sedge
Designated Endangered in April 1999. Status re-examined and confirmed in May 2000.
Karner Blue
Has not been observed since 1991. Designated Extirpated in April 1997. Status re-examined and confirmed in May 2000 and April 2010.
Keen's Long-eared Bat
Designated Special Concern in April 1988. Species considered in November 2003 and placed in the Data Deficient category.
Kentucky Coffee-tree
Designated Threatened in April 1983. Status re-examined and confirmed in November 2000.
Kidneyshell
Designated Endangered in May 2003. Status re-examined and confirmed in May 2013.
Killer Whale (North Pacific resident populations)
Designated Threatened in April 1999. The designation of the Killer Whale (North Pacific resident populations) was de-activated in November 2001 when it was split into three populations: Killer Whale (Northern resident population), Killer Whale (Southern resident population) and Killer Whale (Offshore population).
Killer Whale (Northeast Pacific northern resident population)
The “North Pacific resident populations” were given a single designation of Threatened in April 1999. Split into three populations in November 2001. The Northeast Pacific northern resident population was designated Threatened in November 2001. Status re-examined and confirmed in November 2008.
Killer Whale (Northeast Pacific offshore population)
The “North Pacific resident populations” were given a single designation of Threatened in April 1999. Split into three populations in November 2001. The Northeast Pacific offshore population was designated Special Concern in November 2001. Status re-examined and designated Threatened in November 2008.
Killer Whale (Northeast Pacific southern resident population)
The “North Pacific resident populations” were given a single designation of Threatened in April 1999. Split into three populations in November 2001. The Northeast Pacific southern resident population was designated Endangered in November 2001. Status re-examined and confirmed in November 2008.
Killer Whale (Northeast Pacific transient population)
Designated Special Concern in April 1999. Status re-examined and designated Threatened in November 2001 and in November 2008.
Killer Whale (Northwest Atlantic / Eastern Arctic population)
Species considered in April 1999 and in November 2001, and placed in the Data Deficient category. Re-examined in November 2008 and designated Special Concern.
King Rail
Designated Special Concern in April 1985. Status re-examined and designated Endangered in April 1994. Status re-examined and confirmed in November 2000 and in May 2011.
Kirtland's Warbler
Designated Endangered in April 1979. Status re-examined and confirmed in April 1999, May 2000, and April 2008.
Kiyi
The species was designated Special Concern in April 1988. Split into two subspecies (Upper Great Lakes Kiyi and Lake Ontario Kiyi) in May 2005. The original designation was de-activated.
Labrador Duck
Believed to be Extinct since 1875. Designated in April 1985 based on historic records only. Status report prepared and approved by COSEWIC in 1994. Status re-examined and confirmed in May 2000.
Lake Chubsucker
Designated Special Concern in April 1994. Status re-examined and designated Threatened in November 2001. Status re-examined and designated Endangered in November 2008.
Lake Erie Watersnake
Designated Endangered in April 1991 and in April 2006. Status re-examined and designated Special Concern in November 2015.
Lake Ontario Kiyi
The species was designated Special Concern in April 1988. Split into two subspecies (Upper Great Lakes Kiyi and Lake Ontario Kiyi) in May 2005. The Lake Ontario Kiyi was designated Extinct.
Lake Sturgeon
Designated Not at Risk in April 1986. The original designation was de-activated in May 2005 to allow designation of separate populations.
Lake Sturgeon (Great Lakes - Upper St. Lawrence populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Great Lakes - Upper St. Lawrence populations" unit was designated Special Concern. Status re-examined and designated Threatened in November 2006.
Lake Sturgeon (Lake of the Woods - Rainy River populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Lake of the Woods - Rainy River populations" unit was designated Special Concern. Status re-examined and confirmed in November 2006.
Lake Sturgeon (Nelson River populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Western populations" unit was designated Endangered. In November 2006, when the Western populations unit was split into five separate populations, the "Nelson River populations" unit was designated Endangered.
Lake Sturgeon (Red-Assiniboine Rivers - Lake Winnipeg populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Western populations" unit was designated Endangered. In November 2006, when the Western populations unit was split into five separate populations, the "Red-Assiniboine Rivers - Lake Winnipeg populations" unit was designated Endangered.
Lake Sturgeon (Saskatchewan River populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Western populations" unit was designated Endangered. In November 2006, when the Western populations unit was split into five separate populations, the "Saskatchewan River populations" unit was designated Endangered.
Lake Sturgeon (Southern Hudson Bay - James Bay populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Southern Hudson Bay - James Bay populations" unit was designated Special Concern. Status re-examined and confirmed in November 2006.
Lake Sturgeon (Western Hudson Bay populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Western populations" unit was designated Endangered. In November 2006, when the Western populations unit was split into five separate populations, the "Western Hudson Bay populations" unit was designated Endangered.
Lake Sturgeon (Western populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Western populations" unit was designated Endangered. In November 2006, when the Western populations unit was split into five separate populations, the original Western populations unit was de-activated.
Lake Sturgeon (Winnipeg River - English River populations)
The species was considered a single unit and designated Not at Risk in April 1986. When the species was split into separate units in May 2005, the "Western populations" unit was designated Endangered. In November 2006, when the Western populations unit was split into five separate populations, the "Winnipeg River - English River populations" unit was designated Endangered.
Lake Whitefish (Lake Simcoe population)
Designated Threatened in April 1987. Species considered in May 2005 and placed in the Data Deficient category.
Lake Whitefish (Mira River population)
Species considered in April 1999 and in November 2000, and placed in the Data Deficient category.
Lake Winnipeg Physa
Designated Endangered in November 2002. Species considered in November 2012 and placed in the Data Deficient category.
Large Whorled Pogonia
Designated Endangered in April 1986. Status re-examined and confirmed Endangered in April 1998, May 2000, and November 2011.
Least Bittern
Designated Special Concern in April 1988. Status re-examined and confirmed in April 1999. Status re-examined and designated Threatened in November 2001 and in April 2009.
Leatherback Sea Turtle
The species was considered a single unit and designated Endangered in April 1981. Status re-examined and confirmed in May 2001. Split into two populations in May 2012. The original designation was de-activated.
Leatherback Sea Turtle (Atlantic population)
The species was considered a single unit and designated Endangered in April 1981. Status re-examined and confirmed in May 2001. Split into two populations in May 2012. The Atlantic population was designated Endangered in May 2012.
Leatherback Sea Turtle (Pacific population)
The species was considered a single unit and designated Endangered in April 1981. Status re-examined and confirmed in May 2001. Split into two populations in May 2012. The Pacific population was designated Endangered in May 2012.
Lewis's Woodpecker
Designated Special Concern in April 1999. Status re-examined and confirmed in November 2001. Status re-examined and designated Threatened in April 2010.
Little Brown Myotis
Designated Endangered in an emergency assessment on February 3, 2012. Status re-examined and confirmed in November 2013.
Loggerhead Shrike
The species was considered a single unit and designated Threatened in April 1986. The excubitorides and the migrans subspecies were designated separately in April 1991, and the original designation was de-activated.
Loggerhead Shrike Eastern subspecies
The species was considered a single unit and designated Threatened in April 1986. Split according to subspecies (excubitorides and migrans) in April 1991, and each received separate designations. The migrans subspecies was de-activated in May 2014 in recognition of new genetic information indicating that some of the individuals in southeastern Manitoba should not have been included in the migrans subspecies. Further split into a new unnamed subspecies (Eastern subspecies, Lanius ludovicianus ssp.) in May 2014 and was designated Endangered.
Loggerhead Shrike migrans subspecies
The species was considered a single unit and designated Threatened in April 1986. Split according to subspecies in April 1991. The migrans subspecies was designated Endangered in April 1991. Status re-examined and confirmed in November 2000. De-activated in May 2014 in recognition of new genetic information indicating that some of the individuals in southeastern Manitoba should not have been included in the migrans subspecies.
Loggerhead Shrike Prairie subspecies
The species was considered a single unit and designated Threatened in April 1986. Split according to subspecies in April 1991. The excubitorides subspecies retained the original Threatened designation from April 1986. Status re-examined and confirmed in May 2004 and May 2014.
Long's Braya
Designated Endangered in April 1997. Status re-examined and confirmed in May 2000 and May 2011.
Long-billed Curlew
Designated Special Concern in April 1992. Status re-examined and confirmed in November 2002 and May 2011.
Longjaw Cisco
Extinct since 1975. Designated Extinct in April 1985. Status re-examined and confirmed in May 2000. Designation de-activated in May 2002 because it was concluded that this species is a synonym of the Shortjaw Cisco, Coregonus zenithicus, which was designated Threatened in 1987.
Louisiana Waterthrush
Designated Special Concern in April 1991. Status re-examined and confirmed in April 1996 and April 2006. Status re-examined and designated Threatened in November 2015.
Lyall's Mariposa Lily
Designated Threatened in May 2001. Status re-examined and designated Special Concern in May 2011.
Mackenzie Hairgrass
Designated Special Concern in April 1999. Status re-examined and confirmed in November 2001.
Macoun's Meadowfoam
Designated Special Concern in April 1988. Status re-examined and designated Threatened in November 2004.
Marbled Murrelet
Designated Threatened in April 1990. Status re-examined and confirmed in November 2000 and May 2012.
Margined Madtom
Designated Threatened in April 1989. Species considered in May 2002 and placed in the Data Deficient category.
Margined Streamside Moss
Designated Endangered in November 2002. Status re-examined and confirmed in May 2012.
Maritime Ringlet
Designated Endangered in April 1997. Status re-examined and confirmed in May 2000 and in April 2009.
Massasauga
The species was considered a single unit and designated Threatened in April 1991. Status re-examined and confirmed in November 2002. Split into two populations in November 2012. The original designation was de-activated.
Massasauga (Carolinian population)
The species was considered a single unit and designated Threatened in April 1991. Status re-examined and confirmed in November 2002. Split into two populations in November 2012. The Carolinian population was designated Endangered in November 2012.
Massasauga (Great Lakes / St. Lawrence population)
The species was considered a single unit and designated Threatened in April 1991. Status re-examined and confirmed in November 2002. Split into two populations in November 2012. The Great Lakes / St. Lawrence population was designated Threatened in November 2012.
McCown's Longspur
Designated Special Concern in April 2006. Status re-examined and designated Threatened April 2016.
Mexican Mosquito-fern
Designated Threatened in April 1984. Status re-examined and confirmed in April 1998, May 2000, and November 2008.
Monarch
Designated Special Concern in April 1997. Status re-examined and confirmed in November 2001 and in April 2010.
Mormon Metalmark (Prairie population)
Designated Threatened in May 2003. Status re-examined and designated Special Concern in May 2014.
Mormon Metalmark (Southern Mountain population)
Designated Endangered in May 2003. Status re-examined and confirmed in May 2014.
Mountain Beaver
Designated Not at Risk in April 1984. Status re-examined and designated Special Concern in April 1999. Status re-examined and confirmed in November 2001 and May 2012.
Mountain Plover
Designated Endangered in April 1987. Status re-examined and confirmed November 2000 and in November 2009.
Mountain Sucker
The species was considered a single unit and designated Not at Risk in April 1991. Split into three populations in November 2010. The original designation was de-activated.
Mountain Sucker (Milk River populations)
The species was considered a single unit and designated Not at Risk in April 1991. Split into three populations in November 2010. The "Milk River populations" unit was designated Threatened in November 2010.
Mountain Sucker (Pacific populations)
The species was considered a single unit and designated Not at Risk in April 1991. Split into three populations in November 2010. The "Pacific populations" unit was designated Special Concern in November 2010.
Mountain Sucker (Saskatchewan - Nelson River populations)
The species was considered a single unit and designated Not at Risk in April 1991. Split into three populations in November 2010. The "Saskatchewan - Nelson River populations" unit was designated Not at Risk in November 2010.
Narwhal
Designated Not at Risk in April 1986 and in April 1987. Status re-examined and designated Special Concern in November 2004.
New Jersey Rush
Designated Special Concern in April 1992. Status re-examined and confirmed in May 2004.
Nodding Pogonia
Designated Threatened in April 1988. Status re-examined and designated Endangered in April 1999. Status re-examined and confirmed in May 2000 and November 2010.
Non-pollinating Yucca Moth
Designated Endangered in April 2006. Status re-examined and confirmed in May 2013.
Nooksack Dace
Designated Endangered in April 1996. Status re-examined and confirmed in May 2000 and April 2007.
North Atlantic Right Whale
The Right Whale was considered a single species and designated Endangered in 1980. Status re-examined and confirmed in April 1985 and in April 1990. Split into two species in May 2003 to allow a separate designation of the North Atlantic Right Whale. North Atlantic Right Whale was designated Endangered in May 2003 and November 2013.
North Pacific Right Whale
The Right Whale was considered a single species and designated Endangered in 1980. Status re-examined and confirmed in April 1985 and in April 1990. Split into two species in May 2003. North Pacific Right Whale was not re-evaluated in May 2003; it retained the Endangered status of the original Right Whale. Status re-examined and confirmed Endangered in November 2004 and May 2015.
Northern Abalone
Designated Threatened in April 1999. Status re-examined and confirmed in May 2000. Status re-examined and designated Endangered in April 2009.
Northern Bobwhite
Designated Endangered in April 1994. Status re-examined and confirmed in November 2003 and May 2013.
Northern Bottlenose Whale
The Northern Bottlenose Whale was given a single designation of Not at Risk in April 1993. Split into two populations in April 1996 to allow a separate designation of the Northern Bottlenose Whale (Scotian Shelf population). Northern Bottlenose Whale (Davis Strait-Baffin Bay-Labrador Sea population) was not re-evaluated, but retains the Not at Risk designation of the original Northern Bottlenose Whale, and the latter was de-activated.
Northern Bottlenose Whale (Davis Strait-Baffin Bay-Labrador Sea population)
The Northern Bottlenose Whale was given a single designation of Not at Risk in April 1993. Split into two populations in April 1996 to allow a separate designation of the Northern Bottlenose Whale (Scotian Shelf population). The Davis Strait-Baffin Bay-Labrador Sea population was not assessed in 1996; it retained the Not at Risk designation of the original Northern Bottlenose Whale. The population was designated Special Concern in May 2011.
Northern Bottlenose Whale (Scotian Shelf population)
The Northern Bottlenose Whale was given a single designation of Not at Risk in April 1993. Split into two populations in April 1996 to allow a separate designation of the Northern Bottlenose Whale (Scotian Shelf population). Scotian Shelf population designated Special Concern in April 1996. Status re-examined and designated Endangered in November 2002 and in May 2011.
Northern Brook Lamprey
The species was considered a single unit and designated Special Concern in April 1991. Split into two populations in April 2007. The original designation was de-activated.
Northern Brook Lamprey (Great Lakes - Upper St. Lawrence populations)
The species was considered a single unit and designated Special Concern in April 1991. When the species was split into separate units in April 2007, the "Great Lakes - Upper St Lawrence populations" unit was designated Special Concern.
Northern Brook Lamprey (Saskatchewan - Nelson population)
The species was considered a single unit and designated Special Concern in April 1991. When the species was split into separate units in April 2007, the "Saskatchewan-Nelson population" unit was designated Data Deficient.
Northern Dusky Salamander
The species was considered a single unit and designated Not at Risk in April 1999. Split into two populations in May 2012. The original designation was de-activated.
Northern Dusky Salamander (Carolinian population)
The species was considered a single unit and designated Not at Risk in April 1999. Split into two populations in May 2012. The Carolinian population was designated Endangered in May 2012.
Northern Dusky Salamander (Quebec / New Brunswick population)
The species was considered a single unit and designated Not at Risk in April 1999. Split into two populations in May 2012. The Quebec / New Brunswick population was designated Not at Risk in May 2012.
Northern Fur Seal
Designated Not at Risk in April 1996. Status re-examined and designated Threatened in April 2006. Status re-examined and confirmed in November 2010.
Northern Goshawk laingi subspecies
Designated Special Concern in April 1995. Status re-examined and designated Threatened in November 2000 and May 2013.
Northern Leopard Frog (Eastern populations)
Designated Not at Risk in April 1999 and in April 2009.
Northern Leopard Frog (Rocky Mountain population)
Designated Endangered in April 1998. Status re-examined and confirmed in May 2000 and in April 2009.
Northern Leopard Frog (Western Boreal/Prairie populations)
Designated Special Concern in April 1998. Status re-examined and confirmed in November 2002 and in April 2009.
Northern Madtom
Species considered in April 1993 and placed in the Data Deficient category. Re-examined in April 1998 and designated Special Concern. Status re-examined and designated Endangered in November 2002 and May 2012.
Northern Map Turtle
Designated Special Concern in May 2002. Status re-examined and confirmed in November 2012.
Northern Myotis
Designated Endangered in an emergency assessment on February 3, 2012. Status re-examined and confirmed in November 2013.
Northern Red-legged Frog
Designated Special Concern in April 1999. Status re-examined and confirmed in May 2002, November 2004, and May 2015.
Northern Riffleshell
Designated Endangered in April 1999. Status re-examined and confirmed in May 2000 and April 2010.
Northern Rubber Boa
Designated Special Concern in May 2003. Status re-examined and confirmed in April 2016.
Northern Sunfish
The species was considered a single unit and designated Not at Risk in April 1987. Split into two separate units in April 2016. The original designation was de-activated.
Northern Sunfish (Great Lakes - Upper St. Lawrence populations)
The species was considered a single unit and designated Not at Risk in April 1987. When the species was split into two separate units in April 2016, the "Great Lakes - Upper St. Lawrence populations " unit was designated Special Concern.
Northern Sunfish (Saskatchewan - Nelson River populations)
The species was considered a single unit and designated Not at Risk in April 1987. When the species was split into two separate units in April 2016, the "Saskatchewan - Nelson River populations" unit was designated Not at Risk.
Northern Wolffish
Designated Threatened in May 2001. Status re-examined and confirmed in November 2012.
Nuttall's Cottontail nuttallii subspecies
Designated Special Concern in April 1994 and in April 2006.
Nuttall's Cottontail pinetis subspecies
Designated Not at Risk in 1991 and in April 1994.
Oldgrowth Specklebelly Lichen
Designated Special Concern in April 1996. Status re-examined and confirmed in April 2010.
Olympia Oyster
Designated Special Concern in November 2000 and in May 2011.
Orangespotted Sunfish
Designated Special Concern in April 1989.  Designation de-activated in April 2008 because it was concluded that this species is ineligible for assessment.
Ord's Kangaroo Rat
Designated Special Concern in April 1995. Status re-examined and designated Endangered in April 2006.
Oregon Forestsnail
Designated Endangered in November 2002. Status re-examined and confirmed in May 2013.
Oregon Spotted Frog
Designated Endangered in an emergency assessment on 13 September 1999. Status re-examined and confirmed in May 2000 and in May 2011.
Ottoe Skipper
Designated Endangered in May 2005. Status re-examined and confirmed in May 2015.
Pacific Gophersnake
Designated Extirpated in May 2002. Status re-examined and confirmed in May 2012.
Pacific Pond Turtle
Designated Extirpated in May 2002. Status re-examined and confirmed in May 2012.
Pacific Sardine
Designated Special Concern in April 1987. Status re-examined and designated Not at Risk in May 2002.
Pacific Water Shrew
Designated Threatened in April 1994 and in May 2000. Status re-examined and designated Endangered in April 2006. Status re-examined and confirmed in April 2016.
Paddlefish
Disappeared from Canada in approximately 1917. Designated Extirpated in April 1987. Status re-examined and confirmed in May 2000 and April 2008.
Pallid Bat
Designated Special Concern in April 1988. Status re-examined and designated Threatened in May 2000. Status re-examined and confirmed in November 2010.
Passenger Pigeon
Believed to be Extinct since 1914. Designated in April 1985 based on historic records only. Status report prepared and approved by COSEWIC in 1994. Status re-examined and confirmed in May 2000.
Paxton Lake Benthic Threespine Stickleback
Designated Threatened in April 1998. Status re-examined and confirmed in April 1999. Status re-examined and designated Endangered in May 2000. Status re-examined and confirmed in April 2010.
Paxton Lake Limnetic Threespine Stickleback
Designated Threatened in April 1998. Status re-examined and confirmed in April 1999. Status re-examined and designated Endangered in May 2000. Status re-examined and confirmed in April 2010.
Peary Caribou
The original designation considered a single unit that included Peary Caribou, Rangifer tarandus pearyi, and what is now known as the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. It was assigned a status of Threatened in April 1979. Split to allow designation of three separate populations in 1991: Banks Island (Endangered), High Arctic (Endangered) and Low Arctic (Threatened) populations. In May 2004 all three population designations were de-activated, and the Peary Caribou was assessed separately from the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. The subspecies pearyi is composed of a portion of the former "Low Arctic population", and all of the former "High Arctic" and "Banks Island" populations, and it was designated Endangered in May 2004. Status re-examined and designated Threatened in November 2015.
Peary Caribou (Banks Island population)
The original designation considered a single unit that included Peary Caribou, Rangifer tarandus pearyi, and what is now known as the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. It was assigned a status of Threatened in April 1979. Split to allow designation of three separate populations in 1991: Banks Island, High Arctic and Low Arctic populations. The Banks Island population was designated Endangered in April 1991. In May 2004 all three population designations were de-activated, and the Peary Caribou, Rangifer tarandus pearyi, was assessed separately from the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. The former Banks Island population is contained within the subspecies pearyi.
Peary Caribou (High Arctic population)
The original designation considered a single unit that included Peary Caribou, Rangifer tarandus pearyi, and what is now known as the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. It was assigned a status of Threatened in April 1979. Split to allow designation of three separate populations in 1991: Banks Island, High Arctic and Low Arctic populations. The High Arctic population of the Peary Caribou was designated Endangered in April 1991. In May 2004 all three population designations were de-activated, and the Peary Caribou, Rangifer tarandus pearyi, was assessed separately from the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. The former High Arctic population is contained within the subspecies pearyi.
Peary Caribou (Low Arctic population)
The original designation considered a single unit that included Peary Caribou, Rangifer tarandus pearyi, and what is now known as the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. It was assigned a status of Threatened in April 1979. Split to allow designation of three separate populations in 1991: Banks Island, High Arctic and Low Arctic populations. The Low Arctic population was designated Threatened in April 1991. In May 2004 all three population designations were de-activated, and the Peary Caribou, Rangifer tarandus pearyi, was assessed separately from the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. The former Low Arctic population is contained partly within the subspecies pearyi and partly within the Dolphin and Union Caribou.
Peary Caribou (original designation)
The original designation considered a single unit that included Peary Caribou, Rangifer tarandus pearyi, and what is now known as the Dolphin and Union Caribou, Rangifer tarandus groenlandicus. It was assigned a status of Threatened in April 1979. Split into three separate populations in April 1991: Banks Island, High Arctic and Low Arctic populations. The original designation was de-activated. In May 2004 all three population designations were de-activated, and the Peary Caribou, Rangifer tarandus pearyi, was assessed separately from the Dolphin and Union Caribou, Rangifer tarandus groenlandicus.
Peregrine Falcon anatum subspecies
The Peregrine Falcon in Canada was originally assessed by COSEWIC as three separate subspecies: anatum subspecies (Endangered in April 1978, Threatened in April 1999 and in May 2000), tundrius subspecies (Threatened in April 1978 and Special Concern in April 1992) and pealei subspecies (Special Concern in April 1978, April 1999 and November 2001). In April 2007, the Peregrine Falcon in Canada was assessed as two separate units: pealei subspecies and anatum/tundrius. The original Peregrine Falcon anatum subspecies designation was de-activated in April 2007.
Peregrine Falcon anatum/tundrius
The Peregrine Falcon in Canada was originally evaluated by COSEWIC as three separate subspecies: anatum subspecies (Endangered in April 1978, Threatened in April 1999 and in May 2000), tundrius subspecies (Threatened in April 1978 and Special Concern in April 1992) and pealei subspecies (Special Concern in April 1978, April 1999 and November 2001). In April 2007, the Peregrine Falcon in Canada was assessed as two separate units: pealei subspecies and anatum/tundrius. Peregrine Falcon anatum/tundrius was designated Special Concern in April 2007.
Peregrine Falcon pealei subspecies
The Peregrine Falcon in Canada was originally evaluated by COSEWIC as three separate subspecies: anatum subspecies (Endangered in April 1978, Threatened in April 1999 and in May 2000), tundrius subspecies (Threatened in April 1978 and Special Concern in April 1992) and pealei subspecies (Special Concern in April 1978, April 1999 and November 2001). In April 2007, the Peregrine Falcon in Canada was assessed as two separate units: pealei subspecies and anatum/tundrius. The Peregrine Falcon pealei subspecies was designated Special Concern in April 2007.
Peregrine Falcon tundrius subspecies
The Peregrine Falcon in Canada was originally evaluated by COSEWIC as three separate subspecies: anatum subspecies (Endangered in April 1978, Threatened in April 1999 and in May 2000), tundrius subspecies (Threatened in April 1978 and Special Concern in April 1992) and pealei subspecies (Special Concern in April 1978, April 1999 and November 2001). In April 2007, the Peregrine Falcon in Canada was assessed as two separate units: pealei subspecies and anatum/tundrius. The original Peregrine Falcon tundrius subspecies designation was de-activated in April 2007.
Phantom Orchid
Designated Special Concern in April 1992. Status re-examined and designated Threatened in May 2000. Status re-examined and designated Endangered in November 2014.
Pink Coreopsis
Designated Endangered in April 1984. Status re-examined and confirmed Endangered in April 1999, May 2000, and November 2012.
Pink Milkwort
Designated Endangered in April 1984. Status re-examined and confirmed Endangered in April 1998, May 2000, and November 2009.
Piping Plover
The species was considered a single unit and designated Threatened in April 1978. Status re-examined and designated Endangered in April 1985. In May 2001, the species was re-examined and split into two groups according to subspecies. The melodus subspecies and circumcinctus subspecies were each designated Endangered in May 2001. The original designation was de-activated.
Piping Plover circumcinctus subspecies
The species was considered a single unit and designated Threatened in April 1978. Status re-examined and designated Endangered in April 1985. In May 2001, the species was re-examined and split into two groups according to subspecies. The circumcinctus subspecies was designated Endangered in May 2001.Status re-examined and confirmed in November 2013.
Piping Plover melodus subspecies
The species was considered a single unit and designated Threatened in April 1978. Status re-examined and designated Endangered in April 1985. In May 2001, the species was re-examined and split into two groups according to subspecies. The melodus subspecies was designated Endangered in May 2001 and November 2013.
Pitcher's Thistle
Designated Threatened in April 1988. Status re-examined and designated Endangered in April 1999. Status re-examined and confirmed in May 2000. Status re-examined and designated Special Concern in November 2010.
Pixie Poacher
Species considered in April 1991 and placed in the Data Deficient category. Re-examined and designation de-activated in November 2001.
Plains Bison
Designated Threatened in May 2004. Status re-examined and confirmed in November 2013.
Plains Pocket Gopher
Designated Special Concern in April 1979. Status re-examined and designated Not at Risk in April 1998.
Plymouth Gentian
Designated Threatened in April 1984. Status re-examined and confirmed in April 1999 and May 2000. Status re-examined and designated Endangered in November 2012.
Polar Bear
Designated Not at Risk in April 1986. Status re-examined and designated Special Concern in April 1991. Status re-examined and confirmed in April 1999, November 2002, and April 2008.
Poor Pocket Moss
Designated Endangered in November 2001 and May 2011.
Porbeagle
Designated Endangered in May 2004. Status re-examined and confirmed in May 2014.
Poweshiek Skipperling
Designated Threatened in November 2003. Status re-examined and designated Endangered in November 2014.
Prairie Falcon
Designated Not at Risk in April 1978, April 1982 and April 1996.
Prairie Long-tailed Weasel
Designated Threatened in April 1982. Status re-examined and designated Not at Risk in April 1993.
Prairie Lupine
Designated Endangered in April 1996. Status re-examined and confirmed in May 2000 and in April 2009.
Prairie Skink
Designated Special Concern in April 1989. Status re-examined and designated Endangered in May 2004.
Prairie Warbler
Designated Special Concern in April 1985. Status re-examined and designated Not at Risk in April 1999.
Prothonotary Warbler
Designated Special Concern in April 1984. Status re-examined and designated Endangered in April 1996. Status re-examined and confirmed in May 2000 and in April 2007.
Puget Oregonian
Designated Extirpated in November 2002. Status re-examined and confirmed in May 2013.
Pugnose Minnow
Designated Special Concern in April 1985. Status re-examined and confirmed in May 2000. Status re-examined and designated Threatened in May 2012.
Pugnose Shiner
Designated Special Concern in April 1985. Status re-examined and designated Endangered in November 2002. Status re-examined and designated Threatened in May 2013.
Purple Spikerush
Designated Endangered in April 2007. De-activated in April 2008 in recognition of new information regarding the incorrect identification of plants at the single locality at Osoyoos Lake that are in fact those of Bent Spike-rush (Eleocharis geniculata).
Purple Twayblade
Designated Threatened in April 1989. Status re-examined and designated Endangered in April 1999 and in May 2001. Status re-examined and designated Threatened in November 2010.
Pygmy Pocket Moss
Designated Special Concern in May 2005. Status re-examined and designated Not at Risk in April 2016.
Pygmy Short-horned Lizard
Last reported in 1898. Designated Extirpated in April 1992. Status re-examined and confirmed in May 2000 and in April 2007.
Queensnake
Designated Threatened in April 1999. Status re-examined and confirmed in May 2000. Status re-examined and designated Endangered in April 2010.
Rainbow
Designated Endangered in April 2006. Status re-examined and designated Special Concern in November 2015.
Rainbow Smelt (Lake Utopia small-bodied population)
Designated Threatened in April 1998. Status re-examined and confirmed in May 2000 and November 2008.
Rayed Bean
Designated Endangered in April 1999. Status re-examined and confirmed in May 2000 and April 2010.
Red Crossbill percna subspecies
Designated Endangered in May 2004. Status re-examined and designated Threatened April 2016.
Red Mulberry
Designated Threatened in April 1987. Status re-examined and designated Endangered in April 1999. Status re-examined and confirmed in May 2000 and November 2014.
Red-headed Woodpecker
Designated Special Concern in April 1996. Status re-examined and designated Threatened in April 2007.
Red-shouldered Hawk
Designated Special Concern in April 1983. Status re-examined and confirmed in April 1996. Status re-examined and designated Not at Risk in April 2006.
Redbreast Sunfish
Designated Special Concern in April 1989. Species considered in April 2008 and placed in the Data Deficient category.
Redroot
Designated Threatened in April 1994. Status re-examined and confirmed in May 2000. Status re-examined and designated Special Concern in November 2009.
Redside Dace
Designated Special Concern in April 1987. Status re-examined and designated Endangered in April 2007.
Right Whale
The Right Whale was considered a single species and designated Endangered in 1980. Status re-examined and confirmed in April 1985 and in April 1990. Split into two species in May 2003 (North Atlantic Right Whale and North Pacific Right Whale). The status of the North Atlantic Right Whale was re-examined in May 2003 and the status of the North Pacific Right Whale was re-examined in November 2004. The original designation was de-activated in May 2003.
Rigid Apple Moss
Designated Threatened in April 1997. Status re-examined and designated Endangered in May 2000 and November 2009.
River Darter
The species was considered a single unit and designated Not at Risk in April 1989. Split into three separate units in April 2016. The original designation was de-activated.
River Darter (Great Lakes - Upper St. Lawrence populations)
The species was considered a single unit and designated Not at Risk in April 1989. When the species was split into three separate units in April 2016, the "Great Lakes - Upper St. Lawrence populations" unit was designated Endangered.
River Darter (Saskatchewan - Nelson River populations)
The species was considered a single unit and designated Not at Risk in April 1989. When the species was split into three separate units in April 2016, the "Saskatchewan - Nelson River populations" unit was designated Not at Risk.
River Darter (Southern Hudson Bay - James Bay populations)
The species was considered a single unit and designated Not at Risk in April 1989. When the species was split into three separate units in April 2016, the "Southern Hudson Bay - James Bay populations" unit was designated Not at Risk.
River Redhorse
Designated Special Concern in April 1983. Status re-examined and confirmed in April 1987, April 2006, and November 2015.
Rocky Mountain Ridged Mussel
Designated Special Concern in November 2003. Status re-examined and designated Endangered in November 2010.
Rocky Mountain Tailed Frog
Designated Endangered in May 2000. Status re-examined and designated Threatened in November 2013.
Roseate Tern
Designated Threatened in April 1986. Status re-examined and designated Endangered in April 1999. Endangered status re-examined and confirmed in October 1999 and in April 2009.
Ross's Gull
Designated Special Concern in April 1981. Status re-examined and confirmed in April 1996. Status re-examined and designated Threatened in November 2001 and in April 2007.
Round Hickorynut
Designated Endangered in May 2003. Status re-examined and confirmed in May 2013.
Round Pigtoe
Designated Endangered in May 2004. Status re-examined and confirmed in May 2014.
Round-leaved Greenbrier (Great Lakes Plains population)
Designated Threatened in April 1994. Status re-examined and confirmed in May 2001 and November 2007.
Sage Thrasher
Designated Endangered in April 1992. Status re-examined and confirmed in November 2000 and November 2010.
Salamander Mussel
Designated Endangered in May 2001. Status re-examined and confirmed in May 2011.
Salish Sucker
Designated Endangered in April 1986. Status re-examined and confirmed in November 2002. Status re-examined and designated Threatened in November 2012.
Sand-verbena Moth
Designated Endangered in November 2003. Status re-examined and confirmed in November 2013.
Savannah Sparrow princeps subspecies
Designated Special Concern in April 1979. Status re-examined and confirmed in May 2000 and in November 2009.
Scarlet Ammannia
Designated Endangered in April 1999. Status re-examined and confirmed in May 2001.
Scouler's Corydalis
Designated Threatened in May 2001. Status re-examined and designated Not at Risk in November 2006.
Sea Mink
Believed Extinct since 1894. Designated Extinct in April 1986. Status re-examined and confirmed in May 2000.
Sea Otter
Designated Endangered in April 1978. Status re-examined and confirmed Endangered in April 1986. Status re-examined and designated Threatened in April 1996 and in May 2000. Status re-examined and designated Special Concern in April 2007.
Seaside Birds-foot Lotus
Designated Endangered in April 1996. Status re-examined and confirmed in May 2000 and November 2010.
Seaside Bone Lichen
Designated Special Concern in April 1996. Status re-examined and designated Threatened in April 2008.
Seaside Centipede Lichen
Designated Endangered in April 1996. Status re-examined and confirmed in May 2000 and in April 2006.
Sei Whale (Pacific population)
Designated Endangered in May 2003. Status re-examined and confirmed in May 2013.
Sharp-shinned Hawk
Designated Not at Risk in April 1986 and in April 1997.
Sharp-tailed Snake
Designated Endangered in April 1999. Status re-examined and confirmed in October 1999 and November 2009.
Short-eared Owl
Designated Special Concern in April 1994 and April 2008.
Short-tailed Albatross
Designated Threatened in November 2003. Status re-examined and confirmed in November 2013.
Shorthead Sculpin
Designated Threatened in April 1984. Status re-examined and confirmed Threatened in May 2001. Status re-examined and designated Special Concern in November 2010.
Shortjaw Cisco
Designated Threatened in April 1987. Status re-examined and confirmed in May 2003.
Shortnose Cisco
Designated Threatened in April 1987. Status re-examined and designated Endangered in May 2005.
Shortnose Sturgeon
Designated Special Concern in April 1980. Status re-examined and confirmed in May 2005 and in May 2015.
Showy Goldenrod
The species was considered a single unit and designated Endangered in April 1999. Status re-examined and confirmed in May 2000. Split into two populations in November 2010. The original designation was de-activated.
Showy Goldenrod (Boreal population)
The species was considered a single unit and designated Endangered in April 1999. Status re-examined and confirmed in May 2000. Split into two populations in November 2010. The Boreal population was designated Threatened in November 2010.
Showy Goldenrod (Great Lakes Plains population)
The species was considered a single unit and designated Endangered in April 1999. Status re-examined and confirmed in May 2000. Split into two populations in November 2010. The Great Lakes Plains population was designated Endangered in November 2010.
Shumard Oak
Designated Special Concern in April 1984. Status re-examined and confirmed in April 1999.
Silver Chub
The species was considered a single unit and designated Special Concern in April 1985. Status re-examined and confirmed in May 2001. Split into two populations in May 2012. The original designation was de-activated.
Silver Chub (Great Lakes - Upper St. Lawrence populations)
The species was considered a single unit and designated Special Concern in April 1985. Status re-examined and confirmed in May 2001. Split into two populations in May 2012. The "Great Lakes - Upper St. Lawrence populations" unit was designated Endangered in May 2012.
Silver Chub (Saskatchewan - Nelson River populations)
The species was considered a single unit and designated Special Concern in April 1985. Status re-examined and confirmed in May 2001. Split into two populations in May 2012. The "Saskatchewan - Nelson River populations" unit was designated Not at Risk in May 2012.
Silver Hair Moss
Designated Endangered in November 2002. Status re-examined and confirmed in May 2012.
Silver Shiner
Designated Special Concern in April 1983. Status re-examined and confirmed in April 1987. Status re-examined and designated Threatened in May 2011.
Skinner's Agalinis
Designated Endangered in April 1988. Status re-examined and confirmed Endangered in April 1999, May 2000, and November 2010.
Slender Bush-clover
Designated Endangered in April 1986. Status re-examined and confirmed Endangered in April 1999, May 2000, and May 2013.
Slender Mouse-ear-cress
Designated Endangered in April 1992. Status re-examined and designated Threatened in May 2000.
Small White Lady's-slipper
Designated Endangered in April 1981. Status re-examined and confirmed in April 1999 and in May 2000. Status re-examined and designated Threatened in November 2014.
Small Whorled Pogonia
Designated Endangered in April 1982. Status re-examined and confirmed in April 1998, May 2000, and May 2011.
Small-flowered Lipocarpha
Designated Threatened in April 1992. Status re-examined and designated Endangered in November 2002.
Small-flowered Sand-verbena
Designated Threatened in April 1992. Re-examined and designated Endangered in November 2002.
Small-mouthed Salamander
Designated Special Concern in April 1991. Status re-examined and designated Endangered in May 2004 and May 2014.
Smooth Goosefoot
Designated Special Concern in April 1992. Status re-examined and designated Threatened in April 2006.
Snuffbox
Designated Endangered in May 2001. Status re-examined and confirmed in November 2011.
Soapweed
Designated Special Concern in April 1985. Status re-examined and designated Threatened in May 2000 and May 2013.
Sockeye Salmon (Cultus population)
Designated Endangered in an emergency assessment in October 2002. Status re-examined and confirmed in May 2003.
Sockeye Salmon (Sakinaw population)
Designated Endangered in an emergency assessment on 20 October 2002. Status re-examined and confirmed in May 2003. Status re-examined in an emergency reassessment on 20 April 2006 and confirmed Endangered. Status re-examined and confirmed in April 2016.
Southern Flying Squirrel
Designated Special Concern in April 1988. Split into two populations in April 2006. The original designation was de-activated.
Southern Flying Squirrel (Atlantic (Nova Scotia) population)
Designated Special Concern in April 1988. Split into two populations in April 2006 and the Atlantic (Nova Scotia) population was designated Not at Risk.
Southern Flying Squirrel (Great Lakes Plains population)
Designated Special Concern in April 1988. Split into two populations in April 2006 and the Great Lakes Plains population was designated Not at Risk.
Southern Maidenhair Fern
Designated Endangered in April 1984. Status re-examined and confirmed in April 1998, May 2000, and May 2011.
Sowerby's Beaked Whale
Designated Special Concern in April 1989 and in November 2006.
Speckled Dace
Designated Special Concern in April 1980. Status re-examined and designated Endangered in November 2002 and in April 2006.
Spiked Saxifrage
Designated Threatened in May 2013. Status re-examined and designated Special Concern in May 2015.
Spiny Softshell
Designated Threatened in April 1991. Status re-examined and confirmed in May 2002. Status re-examined and designated Endangered in April 2016.
Spotted Bat
Designated Special Concern in April 1988. Status re-examined and confirmed in May 2004 and November 2014.
Spotted Gar
Designated Special Concern in April 1983. Status re-examined and confirmed in April 1994. Status re-examined and designated Threatened in November 2000 and in May 2005. Status re-examined and designated Endangered in November 2015.
Spotted Owl caurina subspecies
Designated Endangered in April 1986. Status re-examined and confirmed in April 1999, May 2000, and April 2008.
Spotted Sucker
Designated Special Concern in April 1983. Status re-examined and confirmed in April 1994, November 2001, May 2005, and November 2014.
Spotted Turtle
Designated Special Concern in April 1991. Status re-examined and designated Endangered in May 2004 and November 2014.
Spotted Wintergreen
Designated Endangered in April 1987. Status re-examined and confirmed Endangered in April 1998 and in May 2000.
Spotted Wolffish
Designated Threatened in May 2001. Status re-examined and confirmed in November 2012.
Sprague's Pipit
Designated Threatened in April 1999. Status re-examined and confirmed in May 2000 and April 2010.
Spring Blue-eyed Mary
No site records since 1954. Designated Extirpated in April 1987. Status re-examined and confirmed in May 2000.
Spring Cisco
Designated Special Concern in April 1992. Status re-examined and designated Endangered in April 2009.
Spring Salamander
The species was considered a single unit and designated Special Concern in April 1999 and May 2002. Split into two populations in May 2011. The original designation was de-activated.
Spring Salamander (Adirondack / Appalachian population)
The species was considered a single unit and designated Special Concern in April 1999 and May 2002. Split into two populations in May 2011. The Adirondack / Appalachian population was designated Threatened in May 2011.
Spring Salamander (Carolinian population)
The species was considered a single unit and designated Special Concern in April 1999 and May 2002. Split into two populations in May 2011. The Carolinian population was designated Extirpated in May 2011.
Steller Sea Lion
Designated Not at Risk in April 1987. Status re-examined and designated Special Concern in November 2003 and November 2013.
Striped Bass (Bay of Fundy population)
Designated Threatened in November 2004. Status re-examined and designated Endangered in November 2012.
Striped Bass (Southern Gulf of St. Lawrence population)
Designated Threatened in November 2004. Status re-examined and designated Special Concern in November 2012.
Striped Bass (St. Lawrence River population)
Designated Extirpated in November 2004. Status re-examined and designated Endangered in November 2012.
Swamp Rose-mallow
Designated Special Concern in April 1987. Status re-examined and confirmed in November 2004.
Sweet Pepperbush
Designated Threatened in April 1986. Status re-examined and confirmed in April 1998. Status re-examined and designated Special Concern in May 2001. Status re-examined and designated Threatened in May 2014.
Swift Fox
Last seen in Saskatchewan in 1928. Designated Extirpated in April 1978. Status re-examined and designated Endangered in April 1998 after successful re-introductions. Status re-examined and confirmed in May 2000. Status re-examined and designated Threatened in November 2009.
Tall Woolly-heads (Prairie population)
Designated Special Concern in May 2001. De-activated in April 2006 in recognition of new information that some prairie specimens formerly included within the Tall Woolly-heads designation are in fact those of Dwarf Woolly-heads (Psilocarphus brevissimus).
Taylor's Checkerspot
Designated Endangered in November 2000 and in May 2011.
Thread-leaved Sundew
Designated Endangered in April 1991. Status re-examined and confirmed in May 2001.
Tiger Salamander (Great Lakes population)
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations : Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with different populations that received separate designations. The original Tiger Salamander population designations were de-activated.
Tiger Salamander (Prairie / Boreal population)
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations : Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with different populations that received separate designations. The original Tiger Salamander population designations were de-activated.
Tiger Salamander (Southern Mountain population)
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations : Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with different populations that received separate designations. The original Tiger Salamander population designations were de-activated.
Timber Rattlesnake
Designated Extirpated in May 2001. Status re-examined and confirmed in November 2010.
Tiny Cryptantha
Designated Endangered in April 1998. Status re-examined and confirmed in May 2000. Status re-examined and designated Threatened in May 2012.
Toothcup
The species was considered a single unit and designated Endangered in April 1999. Status re-examined and confirmed in May 2000. Split into two populations (Great Lakes Plains and Southern Mountain) in November 2014. The original designation was de-activated.
Toothcup (Great Lakes Plains population)
The species was considered a single unit and designated Endangered in April 1999. Status re-examined and confirmed in May 2000. Split into two populations in November 2014. The Great Lakes Plains population was designated Threatened in November 2014.
Toothcup (Southern Mountain population)
The species was considered a single unit and designated Endangered in April 1999. Status re-examined and confirmed in May 2000. Split into two populations in November 2014. The Southern Mountain population was designated Endangered in November 2014.
Townsend's Mole
Designated Threatened in April 1996. Status re-examined and designated Endangered in May 2003 and November 2014.
Tri-colored Bat
Designated Endangered in an emergency assessment on February 3, 2012. Status re-examined and confirmed in November 2013.
Trumpeter Swan
Designated Special Concern in April 1978. Status re-examined and designated Not at Risk in April 1996.
Tubercled Spike-rush
Designated Threatened in May 2000. Status re-examined and designated Special Concern in April 2010.
Tuberous Indian-plantain
Designated Special Concern in April 1988. Status re-examined and confirmed in April 1999 and in May 2002.
Twisted Oak Moss
Designated Special Concern in May 2004. Status re-examined and confirmed in November 2014.
Tyrrell's Willow
Designated Threatened in April 1981. Status re-examined and designated Not at Risk in April 1999.
Umatilla Dace
Designated Special Concern in April 1988. Status re-examined and designated Threatened in April 2010.
Unarmoured Threespine Stickleback
Designated Special Concern in April 1983. Status re-examined and confirmed in November 2013.
Upper Great Lakes Kiyi
The Kiyi was designated Special Concern in April 1988. Split into two subspecies in May 2005 (Upper Great Lakes Kiyi and Lake Ontario Kiyi). The Upper Great Lakes Kiyi was designated Special Concern in May 2005.
Van Brunt's Jacob's-ladder
Designated Threatened in April 1994. Status re-examined and confirmed in November 2002.
Vananda Creek Benthic Threespine Stickleback
Designated Threatened in April 1999. Status re-examined and designated Endangered in May 2000. Status re-examined and confirmed in April 2010.
Vananda Creek Limnetic Threespine Stickleback
Designated Threatened in April 1999. Status re-examined and designated Endangered in May 2000. Status re-examined and confirmed in April 2010.
Vancouver Island Marmot
Designated Endangered in April 1978. Status re-examined and confirmed Endangered in April 1997, May 2000, and April 2008.
Vancouver Lamprey
Designated Special Concern in April 1986. Status re-examined and confirmed in April 1998. Status re-examined and designated Threatened in November 2000 and in November 2008.
Victorin's Gentian
Designated Special Concern in April 1987. Status re-examined and designated Threatened in May 2004.
Victorin's Water-hemlock
Designated Special Concern in April 1987. Status re-examined and confirmed in May 2004.
Virginia Goat's-rue
Designated Threatened in April 1996. Status re-examined and designated Endangered in May 2000 and November 2009.
Warmouth
Designated Special Concern in April 1994. Status re-examined and confirmed in November 2001 and in May 2005. Status re-examined and designated Endangered in May 2015.
Warty Jumping-slug
Designated Special Concern in May 2003. Status re-examined and confirmed in May 2013.
Water Pennywort
Designated Endangered in April 1985. Status re-examined and designated Threatened in April 1999. Status re-examined and confirmed in May 2000. Status re-examined and designated Special Concern in May 2014.
Water-plantain Buttercup
Designated Endangered in April 1996. Status re-examined and confirmed in May 2000 and in April 2009.
Wavy-rayed Lampmussel
Designated Endangered in April 1999. Status re-examined and confirmed in October 1999. Status re-examined and designated Special Concern in April 2010.
Weidemeyer's Admiral
Designated Special Concern in May 2000. Status re-examined and confirmed in May 2012.
Western Blue Flag
Designated Threatened in April 1990. Status re-examined and confirmed in May 2000. Status re-examined and designated Special Concern in April 2010.
Western Brook Lamprey (Morrison Creek population)
Designated Threatened in April 1999. Status re-examined and designated Endangered in May 2000 and in April 2010.
Western Chorus Frog
The species was considered a single unit and designated Not at Risk in May 2001. Split into two populations in April 2008. The original designation was de-activated.
Western Chorus Frog (Carolinian population)
The species was considered a single unit and designated Not at Risk in May 2001. Split into two populations in April 2008. The Carolinian population was designated Not at Risk in April 2008.
Western Chorus Frog (Great Lakes / St. Lawrence - Canadian Shield population)
The species was considered a single unit and designated Not at Risk in May 2001. Split into two populations in April 2008. The Great Lakes / St. Lawrence - Canadian Shield population was designated Threatened in April 2008.
Western Harvest Mouse dychei subspecies
Species considered in April 1994 and placed in the Data Deficient category. Re-examined in April 2007 and designated Endangered.
Western Harvest Mouse megalotis subspecies
Designated Special Concern in April 1994 and in April 2007.
Western Prairie Fringed-orchid
Designated Endangered in April 1993. Status re-examined and confirmed in May 2000.
Western Rattlesnake
Designated Threatened in May 2004. Status re-examined and confirmed in May 2015.
Western Screech-owl
The species was considered a single unit and placed in the Data Deficient category in April 1995. Re-examined in May 2002 and split into two groups according to subspecies. The kennicottii subspecies was designated Special Concern and the macfarlanei subspecies was designated Threatened in May 2002. The original designation was de-activated.
Western Screech-owl kennicottii subspecies
Species considered in April 1995 and placed in the Data Deficient category. It was split according to subspecies in May 2002. The kennicottii subspecies was designated Special Concern in May 2002. Status re-examined and designated Threatened in May 2012.
Western Screech-owl macfarlanei subspecies
Species considered in April 1995 and placed in the Data Deficient category. It was split according to subspecies in May 2002. The macfarlanei subspecies was designated Endangered in May 2002. Status re-examined and designated Threatened in May 2012.
Western Silvery Aster
Designated Special Concern in 1988. Status re-examined and designated Threatened in May 2000.
Western Silvery Minnow
Designated Special Concern in April 1997. Status re-examined and designated Threatened in November 2001. Status re-examined and designated Endangered in April 2008.
Western Skink
Designated Special Concern in May 2002. Status re-examined and confirmed in November 2014.
Western Spiderwort
Designated Threatened in April 1992. Status re-examined and confirmed in November 2002.
Western Tiger Salamander
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations : Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with different populations that received separate designations. The original Tiger Salamander population designations were de-activated.
Western Tiger Salamander (Prairie / Boreal population)
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations: Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with two different populations that received separate designations. The Prairie / Boreal population of the Western Tiger Salamander was assessed as Special Concern.
Western Tiger Salamander (Southern Mountain population)
The Tiger Salamander (Ambystoma tigrinum) was originally assessed by COSEWIC in November 2001 as three separate populations: Great Lakes population (Extirpated), Prairie / Boreal population (Not at Risk), and Southern Mountain population (Endangered). In November 2012, Tiger Salamander was split into two separate species, Eastern Tiger Salamander (Ambystoma tigrinum) and Western Tiger Salamander (Ambystoma mavortium), each with two different populations that received separate designations. The Southern Mountain population of the Western Tiger Salamander was assessed as Endangered.
Western Toad
The species was considered a single unit and designated Special Concern in November 2002. Split into two populations in November 2012. The original designation was de-activated.
Western Toad (Calling population)
The species was considered a single unit and designated Special Concern in November 2002. Split into two populations in November 2012. The Calling population was designated Special Concern in November 2012.
Western Toad (Non-calling population)
The species was considered a single unit and designated Special Concern in November 2002. Split into two populations in November 2012. The Non-calling population was designated Special Concern in November 2012.
Western Yellow-bellied Racer
Designated Not at Risk in April 1991. Status re-examined and designated Special Concern in November 2004. Status re-examined and designated Threatened in November 2015.
Westslope Cutthroat Trout (Alberta population)
Designated Threatened in May 2005 and in November 2006.
Westslope Cutthroat Trout (British Columbia population)
Designated Special Concern in May 2005. Status re-examined and confirmed in November 2006.
White Flower Moth
Designated Endangered in May 2005. Status re-examined and confirmed in November 2014.
White Prairie Gentian
Designated Endangered in April 1991. Status re-examined and confirmed in May 2001 and November 2010.
White Sturgeon
The species was considered a single unit and designated Special Concern in April 1990. Status re-examined and designated Endangered in November 2003. Split into four populations in November 2012. The original designation was de-activated.
White Sturgeon (Lower Fraser River population)
The species was considered a single unit and designated Special Concern in April 1990. Status re-examined and designated Endangered in November 2003. Split into four populations in November 2012. The Lower Fraser River population was designated Threatened in November 2012.
White Sturgeon (Upper Columbia River population)
The species was considered a single unit and designated Special Concern in April 1990. Status re-examined and designated Endangered in November 2003. Split into four populations in November 2012. The Upper Columbia River population was designated Endangered in November 2012.
White Sturgeon (Upper Fraser River population)
The species was considered a single unit and designated Special Concern in April 1990. Status re-examined and designated Endangered in November 2003. Split into four populations in November 2012. The Upper Fraser River population was designated Endangered in November 2012.
White Sturgeon (Upper Kootenay River population)
The species was considered a single unit and designated Special Concern in April 1990. Status re-examined and designated Endangered in November 2003. Split into four populations in November 2012. The Upper Kootenay River population was designated Endangered in November 2012.
White Wood Aster
Designated Threatened in April 1995. Status re-examined and confirmed in November 2002.
White-headed Woodpecker
Designated Threatened in April 1992. Status re-examined and designated Endangered in November 2000 and November 2010.
White-top Aster
Designated Threatened in April 1996. Status re-examined and confirmed in May 2000. Status re-examined and designated Special Concern in April 2009.
Whooping Crane
Designated Endangered in April 1978. Status re-examined and confirmed in November 2000 and in April 2010.
Wild Hyacinth
Designated Special Concern in April 1990. Re-examined and designated Threatened in May 2002.
Willowleaf Aster
Designated Special Concern in April 1999. Status re-examined and designated Threatened in May 2003.
Winter Skate (Eastern Scotian Shelf - Newfoundland population)
The Eastern Scotian Shelf population of Winter Skate was assessed as Threatened in May 2005, and the Northern Gulf - Newfoundland population was assessed as Data Deficient in May 2005. The COSEWIC Guidelines for Recognizing Designatable Units (2013) were used to revise the population structure for the 2015 assessment, resulting in new designatable units. The new Eastern Scotian Shelf – Newfoundland population is composed of the former Eastern Scotian Shelf population and parts of the former Northern Gulf - Newfoundland population. The remaining subpopulations of the Northern Gulf - Newfoundland population were assigned to the new Gulf of St. Lawrence population. The Eastern Scotian Shelf – Newfoundland  population was designated Endangered in May 2015.
Winter Skate (Eastern Scotian Shelf population)
The wildlife species was considered a single unit and designated Threatened in May 2005. Population structure re-examined in May 2015 and this unit, combined with parts of Northern Gulf – Newfoundland population, resulted in the new Eastern Scotian Shelf – Newfoundland population (Endangered, May 2015).  The original designation was de-activated.
Winter Skate (Gulf of St. Lawrence population)
The Southern Gulf of St. Lawrence population of Winter Skate was assessed as Endangered in May 2005, and the Northern Gulf - Newfoundland population was assessed as Data Deficient in May 2005. The COSEWIC Guidelines for Recognizing Designatable Units (2013) were used to revise the population structure for the 2015 assessment, resulting in new designatable units. The new Gulf of St. Lawrence population is composed of the former Southern Gulf of St. Lawrence population and parts of the former Northern Gulf - Newfoundland population. The remaining subpopulations of the Northern Gulf - Newfoundland population were assigned to the new Eastern Scotian Shelf - Newfoundland population. The Gulf of St. Lawrence population was designated Endangered in May 2015.  
Winter Skate (Northern Gulf-Newfoundland population)
The wildlife species was considered a single unit and designated Data Deficient in May 2005. Population structure re-examined in May 2015, splitting this unit, and parts were combined with other existing populations to create two new populations: the new Gulf of St. Lawrence population (with existing Southern Gulf of St. Lawrence population), and the new Eastern Scotian Shelf- Newfoundland population (with existing Eastern Scotian Shelf population). The original designations were de-activated.
Winter Skate (Southern Gulf of St. Lawrence population)
The wildlife species was considered a single unit and designated Endangered in May 2005. Population structure re-examined in May 2015 and this unit, combined with parts of Northern Gulf – Newfoundland population, resulted in the new Gulf of St. Lawrence population (Endangered, May 2015).  The original designation was de-activated.
Winter Skate (Western Scotian Shelf - Georges Bank population)
Species designated Special Concern in May 2005. Status re-examined and designated Not at Risk in May 2015.
Wolverine
The species was considered a single unit and designated Special Concern in April 1982. Split into two populations in April 1989 (Western and Eastern populations). The original designation was de-activated. In May 2014, the Eastern and Western populations were considered as a single unit across the Canadian range and was designated Special Concern.
Wolverine (Eastern population)
The species was considered a single unit and designated Special Concern in April 1982. Split into two populations in April 1989 (Western and Eastern populations). The Eastern population was designated Endangered in April 1989. Status re-examined and confirmed in May 2003. In May 2014, the Eastern and Western populations were considered as a single unit across the Canadian range and was designated Special Concern. The original Eastern population designation was de-activated.
Wolverine (Western population)
The species was considered a single unit and designated Special Concern in April 1982. Split into two populations in April 1989 (Western and Eastern populations). The Western population was designated Special Concern in April 1989. Status re-examined and confirmed in May 2003. In May 2014, the Eastern and Western populations were considered as a single unit across the Canadian range and was designated Special Concern. The original Western population designation was de-activated.
Wood Bison
Designated Endangered in April 1978. Status re-examined and designated Threatened in April 1988 and May 2000. Status re-examined and designated Special Concern in November 2013.
Wood Turtle
Designated Special Concern in April 1996. Status re-examined and designated Threatened in November 2007.
Wood-poppy
Designated Endangered in April 1993. Status re-examined and confirmed in May 2000 and November 2007.
Woodland Caribou (Labrador - Ungava population)
Labrador-Ungava population was designated Not at Risk in April 1984. The designation of the Labrador-Ungava population was de-activated in May 2000. The former Labrador-Ungava population is contained within the Boreal population.
Woodland Caribou (Northern Mountain population)
The Northern Mountain population was designated Not at Risk in May 2000. This population was formerly designated as part of the "Western population"(now de-activated). Status re-examined and designated Special Concern in May 2002. Following the Designatable Unit report on caribou (COSEWIC 2011), a new population structure was proposed and accepted by COSEWIC. This new Northern Mountain population is composed of all 36 subpopulations in the previous Northern Mountain population of Woodland Caribou in addition to 9 subpopulations from the previous (2002) Southern Mountain population of Woodland Caribou, and was designated Special Concern in May 2014. The original Northern Mountain population of Woodland Caribou was de-activated.
Woodland Caribou (Southern Mountain population)
The Southern Mountain population was designated Threatened in May 2000. This population was formerly designated as part of the "Western population" (now de-activated). Status re-examined and confirmed in May 2002. Following the Designatable Unit report on caribou (COSEWIC 2011), a new population structure was proposed and accepted by COSEWIC. This resulted in the new Southern Mountain population, composed of 17 subpopulations from the former Southern Mountain population of Woodland Caribou (COSEWIC 2002). The remaining subpopulations were assigned to the new Central and Northern Mountain populations.The Southern Mountain population of Caribou was designated Endangered in May 2014. The original Southern Mountain population of Woodland Caribou was de-activated.
Woodland caribou (Western population)
The Western population was designated Special Concern in April 1984. The designation of the Western population was de-activated in May 2000. The former Western population is contained within the following newly designated populations: Northern Mountain, Southern Mountain and Boreal.
Woodland Vole
Designated Special Concern in April 1998. Status re-examined and confirmed in November 2001 and November 2010.
Yellow Lampmussel
Designated Special Concern in May 2004. Status re-examined and confirmed in November 2013.
Yellow Montane Violet praemorsa subspecies
Designated Threatened in April 1995. Status re-examined and confirmed in May 2000. Status re-examined and designated Endangered in November 2007.
Yellow Rail
Designated Special Concern in April 1999. Status re-examined and confirmed in November 2001 and in November 2009.
Yellow-breasted Chat auricollis subspecies (Prairie population)
The Prairie population of the auricollis subspecies was designated Not at Risk in April 1994, November 2000, and November 2011.
Yellow-breasted Chat auricollis subspecies (Southern Mountain population)
The Southern Mountain population of the auricollis subspecies was designated Threatened in April 1994. Status re-examined and designated Endangered in November 2000 and November 2011.
Yellow-breasted Chat virens subspecies
Designated Special Concern in April 1994. Status re-examined and confirmed in November 2000. Status re-examined and designated Endangered in November 2011.
Yucca Moth
Designated Endangered in May 2002. Status re-examined and confirmed in May 2013.
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