American badger (Taxidea taxus jacksoni): recovery strategy 2013
Species at Risk Act
Recovery Strategy Series
Adopted under Section 44 of SARA
American Badger, jacksoni subspecies
Under the Accord for the Protection of Species at Risk (1996), the federal, provincial, and territorial governments agreed to work together on legislation, programs, and policies to protect wildlife species at risk throughout Canada.
In the spirit of cooperation of the Accord, the Government of Ontario has given permission to the Government of Canada to adopt the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario (Part 2) under section 44 of the Species at Risk Act. Environment Canada has included an addition which completes the SARA requirements for this recovery strategy.
The American Badger Ontario Government Response Statement (Part 3) has also been included as a part of the adoption process in order to clarify the priorities for implementation. The Government Response Statement is the Ontario Government’s policy response to the recovery strategy and summarizes the prioritized actions that the Ontario Government intends to take.
Environment Canada is adopting the provincial recovery strategy with the exception of section 2.3, Approaches to Recovery. In its place, Environment Canada is adopting the government-led and government-supported actions of the American Badger Ontario Government Response Statement.
It should be noted that the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario (Part 2) and the American Badger Ontario Government Response Statement (Part 3) relate to the entire American Badger species in Ontario, while only the jacksoni subspecies is listed under the Species at Risk Act and therefore addressed by the federal addition to the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario (Part 1).
The federal recovery strategy for the American Badger, jacksoni subspecies, in Canada consists of three parts:
Part 1 – Federal addition to the Recovery Strategy for the American Badger (Taxidea taxus)in Ontario, prepared by Environment Canada.
Part 2 - Recovery Strategy for the American Badger (Taxidea taxus) in Ontario, prepared by the Ontario American Badger Recovery Team for the Ontario Ministry of Natural Resources.
Part 3 – American Badger: Ontario Government Response Statement, prepared by the Ontario Ministry of Natural Resources.
Table of Contents
PART 1 – Federal Addition to the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario, prepared by Environment Canada.
- Additions and Modifications to the Adopted Document
- 1. Species Status Information
- 2. Recovery Feasibility
- 3. Species Information
- 4. Population and Distribution Objectives
- 5. Broad Strategies and General Approaches to Meet Objectives
- 6. Critical Habitat
- 7. Measuring Progress
- 8. Statement on Action Plans
- 9. Effects on the Environment and Other Species
PART 2 – Recovery Strategy for the American Badger (Taxidea taxus) in Ontario, prepared by the Ontario American Badger Recovery Team for the Ontario Ministry of Natural Resources.
PART 3 – American Badger: Ontario Government Response Statement, prepared by the Ontario Ministry of Natural Resources
Recovery Strategy for the American Badger, jacksoni subspecies (Taxidea taxus jacksoni), in Canada – 2013
Environment Canada. 2013. Recovery Strategy for the American Badger, jacksoni subspecies (Taxidea taxus jacksoni) in Canada. Species at Risk Act Recovery Strategy Series. Environment Canada, Ottawa. 14 pp. + Appendices.
For copies of the recovery strategy, or for additional information on species at risk, including COSEWIC Status Reports, residence descriptions, action plans, and other related recovery documents, please visit the Species at Risk (SAR) Public Registry.
Cover illustration: © Ontario Badger Project
Également disponible en français sous le titre
« Programme de rétablissement du blaireau d’Amérique de la sous-espèce jacksoni (Taxidea taxus jacksoni) au Canada »
© Her Majesty the Queen in Right of Canada, represented by the Minister of the Environment, 2013. All rights reserved.
Catalogue no. En3-4/165-2013E-PDF
Content (excluding the illustrations) may be used without permission, with appropriate credit to the source.
PART 1 - Federal Addition to the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario, prepared by Environment Canada
The federal, provincial, and territorial government signatories under the Accord for the Protection of Species at Risk (1996) agreed to establish complementary legislation and programs that provide for effective protection of species at risk throughout Canada. Under the Species at Risk Act (S.C. 2002, c.29) (SARA), the federal competent ministers are responsible for the preparation of recovery strategies for listed Extirpated, Endangered, and Threatened species and are required to report on progress within five years.
The Minister of the Environment is the competent minister for the recovery of the American Badger, jacksoni subspecies, and has prepared the federal component of this recovery strategy (Part 1), as per section 37 of SARA. SARA section 44 allows the federal Minister to adopt all or part of an existing plan for the species if it meets the requirements under SARA for content (sub-sections 41(1) or (2)). The Province of Ontario led the development of the attached recovery strategy for the American Badger (Part 2) in cooperation with Environment Canada. The Ontario Ministry of Natural Resources prepared the Government Response Statement (Part 3) which is the Ontario Government’s policy response to the recovery strategy and summarizes the prioritized actions that the Ontario Government intends to take. Environment Canada is adopting parts of the provincial recovery strategy (Part 2) and parts of the Government Response Statement (Part 3), as specified in this document.
Success in the recovery of this species depends on the commitment and cooperation of many different constituencies that will be involved in implementing the directions set out in this strategy and will not be achieved by Environment Canada, or any other jurisdiction alone. All Canadians are invited to join in supporting and implementing this strategy for the benefit of the American Badger, jacksoni subspecies and Canadian society as a whole.
This recovery strategy will be followed by one or more action plans that will provide information on recovery measures to be taken by Environment Canada and other jurisdictions and/or organizations involved in the conservation of the species. Implementation of this strategy is subject to appropriations, priorities, and budgetary constraints of the participating jurisdictions and organizations.
The original draft of the federal addition was prepared by Bernt Solymár (EarthTramper Consulting Inc.), member of the Ontario American Badger Recovery Team and co-author of the provincial recovery strategy, and Rhonda Donley (EarthTramper Consulting Inc.). The draft was updated by Kathy St. Laurent, Angela Darwin, Madeline Austen and Lesley Dunn (Environment Canada, Canadian Wildlife Service – Ontario) and Wendy Dunford (Environment Canada, Canadian Wildlife Service – National Capital Region). Amelia Argue, Chris Risley, Jodi Benvenuti, Patrick Hubert and Joe Nocera (Ontario Ministry of Natural Resources) reviewed and provided comments and advice during the development of this document.
The following sections have been included to address specific requirements of SARA that are not addressed in the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario (Part 2). In some cases, these sections may also include updated information or modifications to the provincial recovery strategy for adoption by Environment Canada.
The American Badger (Taxidea taxus) is ranked globally as secure (G5) and nationally as secure (N5) and apparently secure (N4) in the United States and Canada, respectively; however, specific ranks have not been developed for the jacksoni subspecies (NatureServe 2010). Table 1 lists the NatureServe (2010) sub-national ranks at the state/province level for the American Badger (Taxidea taxus) within the range of the jacksoni subspecies. The American Badger (Taxidea taxus) is ranked provincially as imperilled (S2) in Ontario and is listed as Endangered under the Ontario Endangered Species Act, 2007 (ESA). The jacksoni subspecies is listed as Endangered on Schedule 1 of the federal Species at Risk Act (SARA).
|S2 (Imperilled)||Indiana, Ohio, Ontario|
|S4 (Apparently Secure)||Illinois, Michigan, Wisconsin|
In Canada, the jacksoni subspecies is present in southwestern Ontario, primarily along the north shore of Lake Erie (Stardom 1979; Dobbyn 1994; Ethier et al. 2012). The subspecies is at its northern range limit in Ontario and is isolated from neighbouring populations by the Great Lakes, by the St. Clair and Detroit rivers, and possibly by intensive development and habitat loss along potential corridors (Ontario American Badger Recovery Team 2010). The Canadian population of the American Badger, jacksoni subspecies (hereafter referred to as the American Badger) probably constitutes less than five percent of the subspecies’ global distribution.
Based on the following four criteria outlined in the draft SARA Policies (Government of Canada 2009), there are unknowns regarding the feasibility of recovery of the American Badger. In keeping with the precautionary principle, a full recovery strategy has been prepared as would be done when recovery is determined to be feasible.
- Individuals of the wildlife species that are capable of reproduction are available now or in the foreseeable future to sustain the population or improve its abundance.
Unknown. There is much uncertainty over the American Badger population size in Ontario and virtually no information on population demographics (e.g., age structure, sex ratio, survival rates). From 2000-2008, 34 confirmed sightings were recorded (Ontario Badger Recovery Team 2010) though approximately up to a third of these observations are of deceased individuals, primarily road-killed specimens. The American Badger population around the Great Lakes in Ontario is considered physically and genetically isolated from populations to the south, thus there is uncertainty as to whether individuals obtained from other parts of the range would be of the same genetic stock. A Trent University study in 2009 and 2010 in Norfolk County, Ontario and surrounding areas documented two female badgers with kits, indicating that the population is reproducing.
- Sufficient suitable habitat is available to support the species or could be made available through habitat management or restoration.
Yes. Due to the American Badger’s ability to utilize a variety of both natural and human influenced environments, and their ability to travel over large distances to find suitable habitat and prey, there is reason to believe sufficient suitable habitat is available within the species’ range in Ontario. Badgers appear to be generally tolerant of human presence and will use golf courses, abandoned buildings and roadsides (Newhouse 1999). Agricultural areas can support badgers provided there are sufficient hedgerows, fencerows and field edges. Though the availability of suitable habitat appears to be declining, more could be made available through habitat management or restoration activities.
- The primary threats to the species or its habitat (including threats outside Canada) can be avoided or mitigated.
Unknown. The primary threats to the American Badger are habitat loss, degradation or fragmentation and road mortality. Threats to the species’ habitat can likely be avoided or mitigated using current policies, legislation and land stewardship techniques; however, additional research is required to develop effective methods for reducing road mortality.
- Recovery techniques exist to achieve the population and distribution objectives or can be expected to be developed within a reasonable timeframe.
Unknown. There are several stewardship programs that support grasslands conservation and restoration in southern Ontario counties with records of the American Badger. These include technical outreach and education efforts of Tallgrass Ontario, Carolinian Canada Coalition and the Alternative Land Use Services pilot program in Norfolk County. In addition, tallgrass prairie restoration and planting programs, such as the Rural Lambton Stewardship Network, and a number of native tallgrass prairie seed nurseries have been established. As American Badgers also extensively use human-influenced habitats, working with the agricultural sector to promote farming practices compatible with badgers and their small mammal prey (e.g., smaller field sizes, preservation of hedgerows and fencelines) could also support the achievement of the population and distribution objectives. However, the species’ vulnerability to road mortality is increased due largely to their behavior and life history characteristics (i.e., nomadic behavior, large home range sizes and nocturnal movement patterns); therefore, techniques to reduce the impact of road mortality require further study.
The American Badger in Ontario occurs at the northern edge of its North American range. In addition, the population around the Great Lakes in southwestern Ontario is considered an “island” population, physically and genetically isolated from populations to the south (COSEWIC 2012). Due to the American Badger’s naturally limited distribution in Ontario, it will likely always be vulnerable to anthropogenic and natural stressors.
A recent genetic study by Ethier et al. (2012) has determined that the small northwestern Ontario American Badger population, originally thought to be comprised of individuals of the jacksoni subspecies, belongs in the more common T.t. taxus subspecies found in Manitoba, Saskatchewan and Alberta; this finding is reflected in the updated Committee on the Status of Endangered Wildlife in Canada (COSEWIC) species re-assessment report (COSEWIC 2012). Although the results indicate that the jacksoni subspecies is more isolated than previously thought, the findings do not result in any change to the estimated population size of fewer than 200 individuals of the American Badger, jacksoni subspecies in Canada, all of which occur in southwestern Ontario.
A recent study by Nocera (pers. comm. 2012) on the diet of the American Badger was conducted using claw samples from badgers collected since 1960 (e.g., road kill and museum specimens) in southwestern Ontario. The analysis revealed that small mammals comprised the majority of prey consumed (mean 62% of diet) with Meadow Voles (Microtus pennsylvanicus) identified as a particularly important prey species (mean 45% of overall diet) (Nocera pers. comm. 2012). Geomyid (pocket gophers), microtine (voles) and critetid (mice) rodents were common components of the American Badger diet determined by other studies (Messick 1987; Hoodicoff 2006). For the American Badgers in southwestern Ontario, Eastern Cottontails (Sylvilagus floridanus) made up an additional 32% of the diet while Woodchucks (Marmota monax), also known as Groundhogs, were found to make up less than 3% (Nocera pers. comm. 2012). In addition to the above analysis, Nocera (pers. comm. 2012) also examined the gut contents of 15 American Badger carcasses collected from southwestern Ontario. Eastern Chipmunk (Tamias striatus) comprised 46% of the prey identified followed by Deer Mouse (Perimyscus maniculatus) at 23%, Meadow Jumping Mouse (Zapus hudsonius) at 23%, Eastern Cottontail at 15% and Woodchuck at 7%. It is important to note that only mammalian prey species were able to be identified through the gut content analysis; thus, any reptilian, amphibian or avian based prey (e.g., turtles and turtle eggs, salamanders, birds or bird eggs) would not be represented.
The information presented here was not available at the time of the development of the provincial recovery strategy and habitat regulation, however, it has been considered in the identification of critical habitat (section 6).
The provincial recovery strategy contains the following recovery goal for the recovery of the American Badger in Ontario:
- The goal of this recovery strategy is to achieve reproductively sustainable and secure populations of the American Badger throughout its current range in southern and northwestern Ontario over the next 20 years.
The Government Response Statement for the province of Ontario lists the following goal for the recovery of the American Badger in Ontario:
- The government’s goal for the recovery of the American Badger is to achieve a reproductively sustainable and secure population throughout its current range in Ontario.
Under SARA, a population and distribution objective for the species must be established. The population and distribution objective established by Environment Canada for the American Badger, jacksoni subspecies in Canada is to:
- Achieve a reproductively sustainable and secure population throughout its current range in southwestern Ontario.
Very limited information is available on American Badger abundance and distribution; available information is largely derived from road-killed individuals. In addition, extensive knowledge gaps pertaining to the species ecology in Ontario exist, including: habitat use and movement patterns (e.g., dispersal), population dynamics (e.g., sex ratio, birth rates, juvenile and adult survival), behaviour and mortality factors. These knowledge gaps prevent a quantitative assessment of what constitutes reproductively sustainable and secure populations of this species in Ontario, although studies to fill these gaps and prescribe actions in support of the population and distribution objective are under way (Ontario American Badger Recovery Team 2010).
The government-led and government-supported actions tables from Ontario’s Government Response Statement for the American Badger (Part 3) are adopted as the broad strategies and general approaches to meet the population and distribution objectives. Environment Canada is not adopting the approaches identified in section 2.3 of the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario (Part 2).
Under SARA, critical habitat is “the habitat that is necessary for the survival or recovery of a listed wildlife species and that is identified as the species’ critical habitat in the recovery strategy or in an action plan for the species”.
Identification of critical habitat is not a component of the provincial recovery strategy process undertaken by the Ontario Ministry of Natural Resources under the ESA 2007. However, a recommendation to the Minister of Natural Resources on the area that should be considered in developing a habitat regulation is provided in the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario. Following completion of the provincial recovery strategy for this species, a provincial habitat regulation was developed for the American Badger. A habitat regulation is a legal instrument that prescribes an area that will be protected as the habitat of this species by the Province of Ontario. The following areas are prescribed as the provincially regulated habitat of the American Badger:
An American Badger den that is being used by an American Badger or was used by an American Badger at any time during the previous 12 months.
The area within five metres of the entrance of a den described in #1.
- A Woodchuck burrow or Franklin’s Ground Squirrel (Poliocitellus franklinii) burrow that,
- is being used by a Woodchuck or Franklin’s Ground Squirrel or was used by a Woodchuck or Franklin’s Ground Squirrel at any time in the past, and
- is within 850 metres of a den described in #1.
American Badger dens are often placed in habitat along the margins of landscape features (e.g., agricultural fields and roadsides), at the edges of intact habitat patches and adjacent to corridors (e.g., fence lines, field borders, hedgerows, woodland edges and ditch banks) suggesting that these latter habitats are used for travel and possibly for hunting (Warner and Ver Steeg 1995; Quinn 2008; Ontario American Badger Recovery Team 2010). In Ontario, the American Badger dens are typically found in old fields, pastureland, agricultural fields and orchards, scrubland, wooded ravines and woodlots, and are associated with sandy or other friable soils (Baker 1983; Messick 1987; Ontario American Badger Recovery Team 2010).
The rareness of the American Badger and limited available information from monitoring or research makes it difficult to identify critical habitat on a site-by-site basis. In addition, the majority of the available data are based on records of individual badgers killed on roads. Although this information provides an indication as to the presence and range of the species, it does not necessarily locate the species within its suitable habitat. Since the publication of the Recovery Strategy for the American Badger (Taxidea taxus) in Ontario, new information has been gathered on the American Badger prey items that indicate that Woodchucks are a relatively minor component of the badgers’ diet in Ontario (see section 3.2). Franklin’s Ground Squirrel range overlaps with the population of American Badgers only in northwestern Ontario which has recently been determined to belong to the American Badger, taxus subspecies (see section 3.1). Based on this new information, Environment Canada is not incorporating item #3 of the above habitat regulation in the identification of critical habitat.
Until further information is gained on the habitat requirements of the American Badger and the biophysical attributes of suitable habitat, the critical habitat under SARA will be the regulated habitat under Ontario’s ESA 2007 for the American Badger, removing item #3. It is recognized that the critical habitat identified is insufficient to achieve the population and distribution objectives for the species, therefore, a Schedule of Studies (section 6.1) is included. The Schedule of Studies outlines the activities required to identify additional critical habitat necessary to support the population and distribution objectives of this species.
Destruction is determined on a case by case basis. Destruction would result if part of the critical habitat was degraded, either permanently or temporarily, such that it would not serve its function when needed by the species. Destruction may result from a single activity or multiple activities at one point in time or from the cumulative effects of one or more activities over time (Government of Canada 2009).
Activities that are likely to result in the destruction of critical habitat include, but are not limited to:
- Activities that result in the destruction or degradation of American Badger dens including, but not limited to, soil compaction or den collapse caused by the operation of motorized vehicles or heavy equipment, residential / agricultural development, installation of tile drainage, or road construction may reduce or eliminate the number of dens available for various badger life processes.
The performance indicator presented below provides a way to define and measure progress toward achieving the population and distribution objectives. Every five years, success of recovery strategy implementation will be measured against the following performance indicator:
- a reproductively sustainable and secure population has been achieved throughout the species range in southwestern Ontario.
Once studies referred to in section 4, as well as activities identified in section 6.1, are completed, the indicators above could be made more specific and measurable.
One or more action plans will be completed and posted on the Species at Risk Public Registry for American Badger, jacksoni subspecies by December 2020.
A strategic environmental assessment (SEA) is conducted on all SARA recovery planning documents, in accordance with the Cabinet Directive on the Environmental Assessment of Policy, Plan and Program Proposals. The purpose of a SEA is to incorporate environmental considerations into the development of public policies, plans, and program proposals to support environmentally sound decision-making.
Recovery planning is intended to benefit species at risk and biodiversity in general. However, it is recognized that strategies may also inadvertently lead to environmental effects beyond the intended benefits. The planning process based on national guidelines directly incorporates consideration of all environmental effects, with a particular focus on possible impacts on non-target species or habitats. The results of the SEA are incorporated directly into the strategy itself, but are also summarized below.
The potential effects on other species are discussed in section 2.7 of the provincial strategy. This recovery strategy will clearly benefit the environment by promoting the recovery of the American Badger. Since the badger is primarily a grassland species, any efforts to create or recover the species’ habitat could have positive impacts on other grassland species, including prey species and several listed species at risk (Barn Owl (Tyto alba), Northern Bobwhite (Colinus virginianus), Henslow’s Sparrow (Ammodramus henslowii) and Eastern Foxsnake (Pantherophis gloydi)) and species which have been assessed by COSEWIC as being at risk (Eastern Meadowlark (Sturnella magna) and Bobolink (Dolichonyx oryzivorus). Management and restoration of both smaller and larger tracts of tallgrass prairie and/or oak savannah habitat will also contribute positively to grassland species, including species at risk, some of which are indicated above. The potential for the strategy to inadvertently lead to adverse effects on other species was considered. Because of the overall rarity of the species in relation to other common predators such as coyotes and feral cats, any impact that enhanced badger numbers have on rabbit and small rodent populations is likely to be insignificant and is likely be offset by increases in prey species’ abundance due to the increase in the quality and quantity of suitable habitat. The SEA concluded that this strategy will clearly benefit the environment and will not entail any significant adverse effects. The reader should refer to the following sections of the document in particular: description of the species’ habitat and biological needs, ecological role, and limiting factors; effects on other species; and the recommended approaches for recovery.
Baker, R.H. 1983. Michigan Mammals, Michigan State University Press, East Lansing, Michigan. 642 pp.
COSEWIC. 2012. In press. COSEWIC assessment and status report on the American badger Taxidea taxus in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vi + 63 pp.
Dobbyn, J. 1994. Atlas of the Mammals of Ontario. Federation of Ontario Naturalists, Toronto, Ontario. 92 pp.
Ethier, D.M., A. Laflèche, B.J. Swanson, J.J. Nocera, and C.J. Kyle. 2012. Population subdivision and peripheral isolation in American badgers (Taxidea taxus) and implications for conservation planning in Canada. Canadian Journal of Zoology 90(5): 630-639.
Government of Canada. 2009. Species at Risk Act Policies, Overarching Policy Framework [Draft]. Species at Risk Act Policy and Guidelines Series. Environment Canada. Ottawa. 38 pp.
Hoodicoff, C.S. 2006. Badger prey ecology: the ecology of six small mammals found in British Columbia. Wildlife Working Report No. WR-109. British Columbia Ministry of the Environment, Ecosystems Branch, Victoria, British Columbia. 31 pp.
Messick, J.P. 1987. North American badger. Pp. 587-597. in M. Novak, J.A. Baker, M.E. Obbard, and M. Malloch (eds.). Wild Furbearer Management and Conservation in North America, Ontario Fur Managers Federation and Ontario Ministry of Natural Resources, Queen’s Printer, Toronto, Ontario.
NatureServe. 2010. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Website. [Accessed: December 15, 2010]
Newhouse, N. 1999. East Kootenay badger project 1998/99 year-end summary report. East Kootenay Environmental Society, Kimberley, B.C., Forest Renewal British Columbia, Cranbrook, B.C., Columbia Basin Fish and Wildlife Compensation Program, Nelson, B.C., Canadian Parks Service, Radium Hot Springs, B.C., Canada.
Nocera, J.J., pers. comm. 2012. Personal communications with K. St. Laurent, February 2012. Research Scientist, Wildlife & Research Development Section, Ontario Ministry of Natural Resources and Adjunct Professor, Environmental & Life Sciences Graduate Program, Trent University.
Ontario American Badger Recovery Team. 2010. Recovery strategy for the American Badger (Taxidea taxus) in Ontario. Ontario Recovery Strategy Series. Prepared for Ontario Ministry of Natural Resources, Peterborough, Ontario. vi + 27 pp.
Quinn, J.H. 2008. The ecology of the American badger Taxidea taxus in California: assessing conservation needs on multiple scales. Dissertation, University of California at Davis. 200 pp.
Stardom, R.P. 1979. Status report on the American badger Taxidea taxus in Canada. Committee on the Status of Endangered Wildlife in Canada, Ottawa, Ontario. 22 pp.
Warner, R. E. and Ver Steeg, B. 1995. Illinois badger studies. Final Report, Federal Aid Project No. W-103-R-1-6. Division of Wildlife Resources, Illinois Department of Natural Resources, Springfield, IL, U.S.A.
1 common, widespread and abundant
2 uncommon but not rare; some cause for long-term concern due to declines or other factors
3 a species that lives in the wild in Ontario but is facing imminent extinction or extirpation
4 a wildlife species facing imminent extirpation or extinction
5 at high risk of extinction or elimination due to a very restricted range, very few populations, steep declines or other factors
6 The response statement is the Ontario government’s policy response to the scientific advice provided in the recovery strategy.
PART 2 - Recovery Strategy for the American Badger (Taxidea taxus) in Ontario, prepared by the Ontario American Badger Recovery Team for the Ontario Ministry of Natural Resources
American Badger (Taxidea taxus) in Ontario
Ontario Recovery Strategy Series
Recovery strategy prepared under the Endangered Species Act, 2007
Natural. Valued. Protected.
Ministry of Natural Resources
- Recommended Citation
- Responsible Jurisdictions
- Executive Summary
- 1. Background Information
- 2. Recovery
- Recovery Strategy Development Team Members
List of Figures
- Figure 1. Approximate ranges of the four American Badger subspecies in North America
- Figure 2. Range of the American Badger in Ontario
- Figure 3. Distribution of American Badger observations in southern Ontario to 2006
List of Tables
- Table 1. Summary of confirmed sighting records of the American Badger in Ontario
- Table 2. Threat classification for American Badger in Ontario
- Table 1. Protection and recovery objectives
- Table 3. Specific approaches to recovery of the American Badger in Ontario
- Table 4. Performance measures
About the Ontario Recovery Strategy Series
This series presents the collection of recovery strategies that are prepared or adopted as advice to the Province of Ontario on the recommended approach to recover species at risk. The Province ensures the preparation of recovery strategies to meet its commitments to recover species at risk under the Endangered Species Act, 2007 (ESA, 2007) and the Accord for the Protection of Species at Risk in Canada.
What is recovery?
Recovery of species at risk is the process by which the decline of an endangered, threatened, or extirpated species is arrested or reversed, and threats are removed or reduced to improve the likelihood of a species’ persistence in the wild.
What is a recovery strategy?
Under the ESA, 2007, a recovery strategy provides the best available scientific knowledge onwhat is required to achieve recovery of a species. A recovery strategy outlines the habitat needs and the threats to the survival and recovery of the species. It also makes recommendations on the objectives for protection and recovery, the approaches to achieve those objectives, and the area that should be considered in the development of a habitat regulation. Sections 11 to 15 of the ESA, 2007 outline the required content and timelines for developing recovery strategies published in this series.
Recovery strategies are required to be prepared for endangered and threatened species within one or two years respectively of the species being added to the Species at Risk in Ontario list. There is a transition period of five years (until June 30, 2013) to develop recovery strategies for those species listed as endangered or threatened in the schedules of the ESA, 2007. Recovery strategies are required to be prepared for extirpated species only if reintroduction is considered feasible.
Nine months after the completion of a recovery strategy a government response statement will be published which summarizes the actions that the Government of Ontario intends to take in response to the strategy. The implementation of recovery strategies depends on the continued cooperation and actions of government agencies, individuals, communities, land users, and conservationists.
For more information
To learn more about species at risk recovery in Ontario, please visit the Ministry of Natural Resources Species at Risk webpage.
Ontario American Badger Recovery Team. 2010. Recovery strategy for the American Badger (Taxidea taxus) in Ontario. Ontario Recovery Strategy Series. Prepared for Ontario Ministry of Natural Resources, Peterborough, Ontario. vi + 27 pp.
Cover illustration: iStockPhoto.com
© Queen’s Printer for Ontario, 2010
ISBN 978-1-4435-0905-3 (PDF)
Content (excluding the cover illustration) may be used without permission, with appropriate credit to the source.
Bernt Solymár, EarthTramper Consulting Inc.
Ron Gould, Ontario Ministry of Natural Resources
A badger working groupwas initiated in Norfolk County in 2001. Members of that group, including Ron Gould (Ontario Ministry of Natural Resources), Mary Gartshore and Peter Carson (Norfolk Field Naturalists) and Bernt Solymár (EarthTramper Consulting Inc.), had significant input into the drafting of this strategy. The Ontario American Badger Recovery Team was formalized in 2003 and has been a significant contributor of information to badger study and development of this recovery strategy.
Thanks also go to the following: the American Badger (Taxidea taxus jeffersonii) Recovery Team in British Columbia for technical comments and background information on their projects; Donald Sutherland of the Natural Heritage Information Centre for supplying a historical database of badger records in Ontario; Jeff Bowman, Ontario Ministry of Natural Resources, for collecting DNA samples for analysis and providing sampling equipment for hair and tissue samples; Sarah Weber for her thorough copy edit of the strategy; and the rural landowners, trappers and members of the public who have contributed to the conservation and recovery of the species by providing information on badger sightings. Funding for initial public outreach, press releases, “Information Wanted!” posters and the drafting of this paper was made possible through the Ontario Ministry of Natural Resources Species at Risk Program (2002–04).
The Ontario Ministry of Natural Resources has led the development of this recovery strategy for the American Badger in accordance with the requirements of the Endangered Species Act, 2007 (ESA 2007). This recovery strategy has been prepared as advice to the Government of Ontario, other responsible jurisdictions and the many different constituencies that may be involved in recovering the species.
The goals, objectives and recovery approaches identified in the strategy are based on the best available knowledge and are subject to revision as new information becomes available. Implementation of this strategy is subject to appropriations, priorities and budgetary constraints of the participating jurisdictions and organizations.
Success in the recovery of this species depends on the commitment and cooperation of many different constituencies that will be involved in implementing the directions set out in this strategy.
Ontario Ministry of Natural Resources
Environment Canada, Canadian Wildlife Service – Ontario
The American Badger (Taxidea taxus jacksoni), a subspecies associated with tallgrass prairie and mixed grassland habitat of the Great Lakes region, is one of three badger subspecies found in Canada. It is present in southwestern Ontario, mainly along the north shore of Lake Erie, and a second, presumably smaller, population occurs in the very northwestern portion of the province, adjacent to the Minnesota border. The Ontario breeding population is thought to consist of fewer than 200 individuals.
In 1979, the American Badger was listed as not at risk in Canada. In 2000, the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) redefined the Canadian badger population to include three subspecies: T. t. taxus in the Prairie provinces, T. t. jeffersonii in the southern interior of British Columbia and T. t. jacksoni in Ontario. Additionally, COSEWIC upgraded the status of the jeffersonii and jacksoni subspecies of the American Badger to endangered. In 2004, T. t. jacksoni was added to the Species at Risk in Ontario List as endangered – not regulated. When this list was regulated in 2008, the subspecies was removed from the species name.
Little research or monitoring has been conducted on the Ontario populations of the American Badger.As a result, many knowledge gaps exist with regard to the abundance, distribution and population trends of this species, as well as its behaviour, habitat requirements, prey species, mortality factors and ecological role. In response, a badger working group was formed in 2001 to look at collecting some preliminary data on the badger in Norfolk County, an area of concentrated activity for the species in the province. A public awareness campaign and request for information led to several dozen new sighting records and specimens. This campaign helped lay the foundation for the formation of the Ontario American Badger Recovery Team.
The goal of this recovery strategy is to achieve reproductively sustainable and secure populations of the American Badger throughout its current range in southern and northwestern Ontario over the next 20 years. To accomplish this, several recovery objectives must be met:
- Fill knowledge gaps on American Badger ecology, behaviour, distribution, movement, dispersal, population dynamics, mortality factors and habitat use in the species’ Ontario range.
- Increase public awareness of and appreciation for the badger and its ecological role in grassland and agricultural ecosystems.
- Reduce human-related threats.
- Quantify habitat suitability for the application of habitat modelling and protection mechanisms.
This recovery strategy recommends that specific research, monitoring and habitat stewardship activities, as well as public outreach and education activities, be conducted over the next five years to gain a better understanding of the American Badger and its requirements so as to be able to recover the species in Ontario. Owing to the persistence of reproductive individuals in suitable but fragmented habitat within Ontario and demonstrated habitat restoration techniques, it has been determined that recovery of the American Badger in Ontario is feasible.
Considering the functions and significance of dens to badgers as residences, as well as the importance of available prey in proximity to them, this recovery strategy recommends that American Badger dens and areas identified as foraging habitat in proximity to a den be considered for protection in a habitat regulation.
Common Name: American Badger
Scientific Name: Taxidea taxus
SARO List Classification: Endangered
SARO List History:
Taxidea taxus – Endangered (2008)
T. t. jacksoni – Endangered – Not Regulated (2004)
COSEWIC Assessment History: T. t. jacksoni – Endangered (2000)
SARA Schedule 1: T. t. jacksoni – Endangered (June 5, 2003)
Conservation Status Rankings:
GRANK: G5 NRANK: N4 SRANK: S2
The glossary provides definitions for the abbreviations above.
The American Badger (Taxidea taxus) is a mid-sized carnivorous mammal in the Mustelidae, or weasel, family. Badgers are grey with black and white stripes on the face and head. They are very muscular and have powerful jaws for killing and consuming prey. The badger uses its long claws, which are easily visible on the front feet, for digging and moving soil. The four recognized subspecies differ mainly in their fur colour, size and geographical range (Newhouse and Kinley 1999, adapted from Hall 1981 and Long 1972) (see figure 1). Individuals of the jacksoni subspecies are typically smaller (body weight of 7–11 kilograms) than the taxus subspecies known from the Prairie provinces (Shantz 1953). Aside from being slightly smaller and having a tawny underside, the jacksoni subspecies looks very similar to other subspecies of badger in North America (Long 1972). Geographic range and resultant differences in prey species are the most significant differences observed among the American Badger subspecies.
American Badger jacksoni is the only subspecies of badger found in Ontario. Throughout the remainder of the recovery strategy, “American Badger” refers to the jacksoni subspecies, unless stated otherwise.
The four subspecies of American Badger are widely distributed in North America. Collectively, their range extends from southern Alberta south to Mexico and from the Pacific coast to Ontario and the Great Lakes states. The range of each subspecies is depicted in figure 1 and described below:
- T. t. taxus occurs from western Ohio, Indiana and Missouri to eastern Colorado, Wyoming and Montana and north to the Prairie provinces (Alberta, Saskatchewan and Manitoba).
- T. t. jeffersonii occurs in Colorado, Wyoming and Montana to southern British Columbia, Washington, Oregon and parts of California.
- T. t. jacksoni occurs from Ohio and western Ontario to Michigan, northern Illinois and Indiana, Wisconsin and Minnesota.
- T. t. berlandieri occurs from Oklahoma and Texas to the northern Sierra Nevada and south into Mexico.
There is thought to be significant overlap in the ranges of subspecies, with intermediate forms occurring in the areas of overlap.
Figure 1. Approximate ranges of the four American Badger subspecies in North America
Source: Newhouse and Kinley 1999
The range of the endangered American Badger jacksoni subspecies includes the geographic area around southern and western Lake Superior, Lake Huron and Lake Erie, on both sides of the Canada–United States border. The subspecies is present throughout the states of Minnesota (J. Erb, Minnesota Department of Natural Resources, pers. comm. 2004) and Wisconsin (Rigney 1999) and parts of Illinois (Warner and Ver Steeg 1995) and Indiana, where expansions have been facilitated by forest clearcutting for agriculture and mining (Gremillion-Smith 1985). Badgers have been recorded in all northern counties and in 52 of 68 southern counties of Michigan (Baker 1983) and in the western 23 counties of Ohio (Ohio Historical Society 2005). The rangeof the American Badger jacksoni subspecies is believed to be closely associated with the pre-settlement range of tallgrass prairie habitats surrounding the Great Lakes region. The American Badger has a provincial rank of S2 (imperilled) in Ontario and a global rank of G5 (secure), as determined by NatureServe (2009); however, specific ranks have not been developed for the jacksoni subspecies.
The jacksoni subspecies of the American Badger is at its northern range limit in Ontario and is isolated from neighbouring populations by the Great Lakes, by the St. Clair and Detroit rivers, and possibly by intensive development and habitat loss along potential corridors. Peripheral populations at the range limit for the subspecies are believed to exhibit lower genetic diversity. This is due in part to the smaller size and density of the population and to isolation from the core population (Lesica and Allendorf 1995). Lower genetic diversity can result in greater risks to population viability and greater fluctuations in population numbers.
Accurate assessments of the abundance of the jacksoni subspecies population are not available. Newhouse and Kinley (1999), however, estimated that fewer than 200 individuals are present in Ontario. In southern Indiana and Illinois, badger populations have expanded their range, and numbers seem to be slowly increasing. The jacksoni subspecies is probably present in the northern parts of these states, and the taxus subspecies is distributed in the southern portions, where most expansion seems to be occurring. In northern Illinois, jacksoni populations are declining (Warner and Ver Steeg 1995). In Wisconsin and Michigan, numbers are thought to be low (Baker 1983), and in Ohio, the jacksoni subspecies is considered rare and its current number of individuals is unknown (Ohio Historical Society 2005). In Wisconsin, Jackson (1961) estimated the badger population to be 5,000 to 20,000 individuals, but he did not identify the subspecies.
The American Badger jacksoni subspecies is present in Canada in southwestern Ontario, primarily along the north shore of Lake Erie, and a second, presumably smaller population is present in northwestern Ontario, adjacent to the Minnesota border (Stardom 1979, Dobbyn 1994) (see figure 2). There is evidence of reproduction among both regional populations (Ontario American Badger Recovery Team 2008, Skitt and Van den Broeck 2004). Records are sparse at best throughout the range of this species. Jacksoni individualsmay occasionally disperse into Manitoba, but no reports or literature indicate that the subspecies is extant there.
Source: Royal Ontario Museum 2006
(modified from Newhouse and Kinley 1999)
Knowledge of historical patterns in the distribution and abundance of the American Badger in Ontario is limited and based on a relatively small number of confirmed reports across a large geographic range. The first known account was from near Grand Bend in north Lambton County in 1895 (NatureServe 2009). From 1980 to the present, there have been nearly 60 reports from both Norfolk and Middlesex counties, with occasional (fewer than six) reports of sightings in the following counties: Kent, Lambton, Oxford, Haldimand, Grey, Bruce, and Rainy River (see figure 3). Table 1 provides a summary of confirmed sightings up to 2008.
Lintack and Voigt (1983) suggested that extralimital records of male badgers found in Waterloo and Grey counties may be of badgers that have dispersed from more southern areas of Ontario. Messick and Hornocker (1981) reported that young badgers in Idaho can disperse for distances of up to 110 kilometres in their first summer, so it is possible that some outlierrecords found in Ontario could be a result of dispersing juveniles. Newhouse and Kinley (1999) suggested that the southern Ontario population is disjunct from other Canadian and U.S. populations and “almost certainly exists as an ‘island’ population.” More study is needed to determine whether the only Canadian range of this species is in Ontario and, if several populations do exist, to determine the genetic relationship among them to ascertain the presence of a functional metapopulation.
Changes to the range of the species in Ontario are not well understood. The recovery team has compiled a list of 144 confirmed reports in Ontario between 1895 and 2008. Information available in Ontario’s Natural Heritage Information Centre (NHIC) database indicates that the American Badger was historically present in some counties in Ontario where the species has not since been confirmed. These include Bruce, Huron, Kent and Elgin counties (NatureServe 2009). More recent outreach and monitoring, however, have indicated that the species occurs in other areas such as Thunder Bay in northwestern Ontario and Wentworth, Brant and Oxford counties in the south. It is not yet known whether this represents a change in distribution of the species or whether these differences are a result of variability of monitoring and reporting.
Figure 3. Distribution of American Badger observations in southern Ontario to 2006
In Ontario, the American Badger seems, on the basis of recent sightings, to be concentrated in several counties. A small population in northwestern Ontario has produced consistent reports, mostly occurring between Rainy River and Fort Frances (Skitt and Van den Broeck 2004), with a probable source being adjacent northern Minnesota, which seems to exhibit a healthy, sustainable population.
COSEWIC has estimated that there are probably fewer than 200 individual American Badgers in Ontario. They are most numerous in the Great Lakes forest region (southwestern Ontario), with small outlier populations possible in northwestern Ontario and the very southeastern corner of Manitoba (Newhouse and Kinley 1999), although researchers from Manitoba have indicated that a population of the jacksoni subspecies is unlikely to be present in that province.Since 2001, a number of confirmed live sightings and roadkilled specimens in southern Ontario, including adults and young, suggest that a small but reproducing population is present in the province.
Given existing information, the Ontario populations of the American Badger probably constitute less than 5 percent of the total jacksoni distribution.
1.4.1 Habitat and Biological Needs
The American Badger requires areas of habitat large enough to sustain sufficiently large prey populations. Preferred areas include natural and undisturbed grasslands, shrubby areas and woodlots (Baker 1983). Historically, the jacksoni subspecies probably inhabited large tracts of tallgrass prairie and oak savanna across its range in the northern midwestern United States and around the Great Lakes. Today, it is also associated with old fields, pastureland, the edges of agricultural fields and orchards, scrubland, wooded ravines and woodlots (Baker 1983, Messick 1987).
In Ontario, it is believed that the Woodchuck (Marmota monax), also known regionally as the Groundhog, and the Eastern Cottontail (Sylvilagus floridanus) are the major prey items of badgers (Dobbyn 1994). From investigation of badger diggings in southern Ontario, there is also evidence that badgers occasionally prey on Meadow Vole (Microtus pennsylvanicus) and mice (Peromyscus spp.) Ontario American Badger Recovery Team 2008). Anecdotal observations by farmers, naturalists and hunters suggest that populations of groundhogs have declined dramatically in southwestern Ontario over the last decade. If substantiated, this trend could have negative effects on badger population densities in the province. In northwestern Ontario, badgers may also prey on Franklin’s Ground Squirrel (Spermophilus franklinii), where the ranges of both species overlap west of the Fort Frances area (Skitt and Van den Broeck 2004).
Being fossorial or burrowing mammals, badgers require sandy or other friable soils in which to create dens for resting, rearing young and overwintering. Soils should be coarse enough to resist collapse when wet (Apps et al. 2001) but contain enough organic matter and be sufficiently adhesive to prevent collapse under dry conditions (such as would be the case with pure sands).
Badgers are not true hibernators but overwinter in a state of torpor, remaining largely inactive through much of the winter, but becoming active and foraging during suitable weather. Badgers are promiscuous breeders; males often breed with multiple females within a home range. Home range sizes can vary widely, probably due to variations in habitat (Newhouse and Kinley 1999). Owing to fragmentation of habitats in southern Ontario, old fields, hedgerows and woodland edges appear to be important habitats for maternal and other den sites and as migration corridors for the dispersal of young
1.4.2 Ecological Role
As an upper trophic carnivore in its Ontario range, the badger’s ecological role in the landscape is still not well understood. The fossorial habits of badgers may have important local ecological functions. Badgers create patch disturbances in tallgrass prairie and other grassland habitats, which can alter plant communities and loosen soil (Collins and Gibson 1990). Badger diggings help to aerate soil, promote the formation of humus and allow water to reach deeper soil levels quickly (Messick 1987, Newhouse and Kinley 1999). Other fossorial mammals use badger holes for shelter and nesting. For example, in Alberta, Burrowing Owls (Athene cunicularia), Pocket Gophers (Thomomys spp.) and snakes sometimes use badger holes (Scobie 2002). To what extent other fossorial species use or rely on badger burrows in Ontario is not known.
Low Population Density and Large Home Range
Home ranges for badgers are generally large, ranging in size from 240 to 850 hectares (ha) (Sargeant and Warner 1972, Long 1973, Messick and Hornocker 1981, Lindzey 1982), and are largely dependent on food density, season and social structure (Lindzey 1987). Other literature indicates that home ranges may be up to 500 square kilometres (i.e., 50,000 ha) in size in areas where habitat or prey availability is poor (Lindzey 1987). Minta (1993) showed that the number of females influences male home range size – where female numbers are high, males need not range far for breeding opportunities – and that female home range size is limited exclusively by food availability. Low prey densities and/or low population densities may lead to increased foraging distance (particularly for females) and consequently may result in an elevated risk of road mortality. This risk is especially high in southwestern Ontario, where rural road density and traffic volumes are high.
Another conservation implication of these large home ranges is that multiple observations of one individual over a large area may be mistakenly assumed to be observations of many badgers. This could easily lead to overestimates of population size (Newhouse and Kinley 1999).
Biological and Behavioural Factors
The B.C. recovery team (Jeffersonii Badger Recovery Team 2008) lists the following reproductive capacity factors as possibly limiting population recovery:
- Badgers may be prone to factors limiting the population recovery of other mustelids, such as low reproductive capacity (Ruggiero et al. 1994, Rahme et al. 1995, Weaver et al. 1996). Females can start breeding in their first season; the proportion that does so is estimated to be between 30 and 50 percent (Messick and Hornocker 1981). Males do not mature sexually until they are over one year old (Messick 1987). The extent to which younger males contribute to successful reproduction at the population level is not known, but it is thought to be limited.
- Female badgers are capable of producing a litter annually, but data from British Columbia suggest that this is rare.
- Female badgers are believed to be induced ovulators and successful fertilization may require multiple copulations (Messick and Hornocker 1981, Minta 1993). Females also exhibit delayed implantation, which is probably influenced by prey availability. During periods of depressed prey availability, female badgers may not breed or implantation may be suspended. If breeding opportunities are limited by low densities (and hence reduced encounters) and food sources are unreliable, overall reproductive output at the population level will be limited.
In Ontario, the recovery team believes that the nomadic behaviour of badgers in search of prey and mates, and their affinity for nocturnal migration within large home ranges also represent limiting factors, by increasing the risk of road mortality. Owing to the fossorial nature of badgers and their related dependence on suitable soils to provide burrowing opportunities, the presence of sandy deposits is also an important consideration that may limit the range of the species. The presence of deep, sandy soils is probably of significant importance for the creation of larger dens used for rearing of young. The majority of reported badger occurrences in Ontario have been from the sand plains of Norfolk, Middlesex, Kent, Elgin and Brant counties.
|1 Habitat Loss|
|Threat Category||Habitat loss or degradation||Extent||Widespread|
|General Threat||Loss of grasslands, related soils and prey availability to agriculture or other development||Occurrence||Current||Current|
|Specific Threat||Fragmentation of habitat; habitat conversion; behavioural disruption;isolation||Causal Certainty||High||High|
|Stress||Reduced population size or viability||Level of Concern||High|
|2 Road Mortality|
|Threat Category||Accidental mortality||Extent||Widespread|
|General Threat||Road mortality||Occurrence||Current||Current|
|Specific Threat||Vehicles colliding with badgers||Causal Certainty||Medium||Medium|
|Stress||Reduced population size or viability; reduced ability to migrate; increased mortality||Level of Concern||Medium–High|
|Threat Category||Natural processes or activities||Extent||Widespread|
|Specific Threat||Predation by coyotes and domestic dogs||Causal Certainty||Moderate||Moderate|
|Stress||Reduced population size; increased mortality||Level of Concern||Low|
|4 Killing and Persecution|
|Threat Category||Disturbance or persecution||Extent||Widespread|
|General Threat||Discriminate killing||Occurrence||Current||Anticipated|
|Specific Threat||Causal Certainty||Moderate||Moderate|
|Stress||Reduced population size; increased mortality||Level of Concern||Low–Medium|
|5 Incidental Trapping|
|Threat Category||Accidental mortality||Extent||Local|
|Specific Threat||Capture as non-target species||Causal Certainty||Moderate|
|Stress||Reduced population size; increased mortality||Level of Concern||Low–Medium|
|Threat Category||Natural processes or activities||Extent||Local|
|Specific Threat||Canine distemper and tularemia||Causal Certainty||Unknown–Low|
|Stress||Reduced population size; increased mortality||Level of Concern||Low|
Loss of native and human-maintained grassland habitats has been extensive throughout the historical range of the American Badger in Ontario. It is estimated that less than 1 percent of Canada’s pre-settlement tallgrass prairie and savannah remain; some of the most significant declines have occurred in Ontario, which once supported more than a thousand square kilometres of tallgrass communities (Delaney et al. 2000). Most remaining grassland habitats are also highly fragmented, a factor that probably forces badgers to maintain larger home ranges in search of prey.
The killing of badgers on roads as they forage and migrate throughout home ranges is a major mortality factor in British Columbia (Jeffersonii Badger Recovery Team 2008). This may be the case in this province as well, given records of vehicular collisions with badgers and reported roadkilled specimens in Ontario. Over 25 percent of badger reports received in Ontario since the mid-1990s have been of roadkilled animals, which suggests that road mortality is a significant threat that could limit badger survival and recovery.
Although badgers are considered upper trophic predators in their southwestern Ontario range, predation of badgers by dogs, although not often documented in Ontario, does occur. Two instances of mortality caused by domestic dogs in southern Ontario have been confirmed, so it is likely that coyote predation also occurs, particularly on young badgers. A study by Ver Steeg and Warner (1999) indicated that predation by coyotes and domestic dogs in Illinois significantly affects juvenile badgers, and that fewer than 70 percent of juveniles survive to dispersal.
Disease is probably another threat to badgers in Ontario, specifically canine distemper, which is known to affect other mustelids, and tularemia, which was found in two necropsied individuals in 2007 (Sadowski and Bowman 2007).
Since 2000, the American Badger is no longer on Ontario’s Furbearers List as a legally targeted species for harvesting, but some incidental trapping of badgers, sometimes in traps set for groundhogs, is still reported. Farmer landowners may also persecute badgers, particularly in areas of livestock forage, where burrowing badgers are not welcome.
Specific research on the American Badger has recently been initiated in Ontario, where records generally are sparse. To implement a sound recovery strategy, current gaps in our knowledge of the species in the province must be addressed:
- What are the current population sizes and distributions of the American Badger in Ontario? Are populations declining, increasing or remaining stable? How many individuals constitute a viable population of this species? Are the current populations genetically sustainable? How does the historical population size and distribution of the American Badger in Ontario compare to the species’ current population size and distribution?
- What is the range of individual animals, and how does this relate to the landscape ecology of Ontario and related protection requirements?
- What is the impact of continued habitat loss, including loss through habitat degradation and fragmentation, on badger populations, and what is its potential effect on reproduction and genetic isolation?
- What is the diet of badgers in Ontario, and how adaptable are badgers to changes in prey type or availability? What population density and abundance relationships exist between predator and prey?
- How significantly are threats of road mortality and predation affecting badger populations in the province?
- What is the general attitude of farmers and rural landowners to badgers, and what effect may these attitudes have on recovery efforts?
- How can we best monitor individual badgers? What are the best protocols for observing active dens/burrows and analyzing carcasses, hair and fecal samples?
- What opportunities exist for working with partner organizations to conserve, protect and restore recovery habitat for this species?
In 1995, the NHIC initiated the task of assembling historical records of the American Badger in Ontario from museum collections, published and unpublished literature, and correspondence with naturalists and members of the general public. The Fur Program (Wildlife Branch, OMNR) has maintained records of badger trappings in the province since 1981. In 2000/01, OMNR implemented a “no quota” approach provincially, which means that there is no allocation for harvesting this species. In 2008, the season was officially closed for American Badger, prohibiting the harvesting of this species.
A badger working group was formed in Norfolk County in 2001. The following January, the working group issued a press release to local media on the status of the badger in the county. The press release included information on the biology of the American Badger and a request for the public to report any historical or recent sightings to the badger working group. Concurrently, it sent a letter and an “Information Wanted!” poster to local taxidermists, veterinarians, trappers, fish and game clubs, naturalist groups and the Norfolk County road works department, asking them to report any sightings or specimens. As a result, over 20 reports (approximately half were sightings within the previous 10 years) and some photographs of dead badgers were submitted, two mounted specimens were located and a pelt was donated. A separate database that the Aylmer District OMNR maintains was initiated to track both confirmed and unconfirmed reports of badgers. This database is periodically integrated with that of the NHIC.
After the demonstrated success of the Norfolk County poster, OMNR developed and distributed an American Badger information and reporting fact sheet across southern Ontario in 2005, which resulted in additional reports of historical and recent sightings. Concurrently, a Microsoft PowerPoint presentation titled “The Status and Significance of American Badgers in Ontario” was developed for outreach use. It has been presented to naturalist, stewardship and conservation groups across southern Ontario and has elicited additional sighting reports. Several local media interviews and a province-wide OMNR news release have helped to keep the badger monitoring efforts in the public eye. Media attention will continue to be an important asset to badger reporting initiatives and resulting population data for status estimates. Over two-thirds of the reports from Norfolk and Middlesex counties received between 1990 and 2003 followed press releases in the local news media asking for information on sightings or specimens, and a presentation to the Woodstock Field Naturalists resulted in additional reports. All reports have been screened to assess their accuracy.
The badger working group evolved into a provincial recovery team for the species in 2003. The Ontario American Badger Recovery Team and OMNR biologists have followed up on recent badger sighting reports to attempt to verify the presence of the animals. At suspected badger burrowing sites, guard hairs have been collected and submitted to OMNR for analysis. OMNR purchased five Camtrakker® wildlife cameras and has placed them at several suspected badger diggings to attempt to attain photographic evidence of badger presence. These camera units have successfully taken photos of badgers in Norfolk and Middlesex counties. One maternal den site, located in Norfolk County in 2006, has been discovered and studied to date.
In 2004, the Fort Frances District OMNR completed a comprehensive rare mammal survey of the area. This survey included distribution of public outreach materials, which resulted in the reporting of an additional six badger observations in the region (Skitt and Van den Broeck 2004).
Necropsy of 10 collected badgers was conducted in partnership with OMNR Wildlife Section in 2007. A variety of biological factors were studied, including general condition, stomach contents and age. The average age of individual badgers sampled was only 1.2 years; one adult male badger from Norfolk County was 7 years old (Sadowski and Bowman 2007).
Aerial surveys were conducted in 2006 and 2007 in areas of Norfolk and Brant counties in an effort to locate and groundtruth potential badger diggings in areas of recent badger reports. The understanding of methodologies for aerial surveys for American Badger and groundtruthing was significantly improved as a result of these efforts and summarized in a report by Sadowski et al. (2007).
Trent University has initiated a badger reporting and research project across the range of the species in Ontario. These efforts have added to local outreach and monitoring, which include a website – ontariobadgers.com – for public informationand a badger sightings reporting hotline (877-715-9299).
The goal of this recovery strategy is to achieve reproductively sustainable and secure populations of the American Badger throughout its current range in southern and northwestern Ontario over the next 20 years.
Current knowledge gaps prevent a quantitative assessment of what constitutes sustainable and secure populations of this species in Ontario, but studies to fill these gaps and prescribe actions in support of the recovery goal are under way.
Under the ESA 2007, a recovery strategy must include a recommendation to the Minister of Natural Resources on the area that should be considered in developing a habitat regulation. A habitat regulation is a legal instrument that prescribes an area that will be protected as the habitat of the species. The recommendation provided below by the author will be one of many sources considered by the Minister when developing the habitat regulation for this species.
Although information on badger ecology in Ontario is limited, there is considerable literature from across North America that indicates that American Badgers consistently depend on the shelter of dens and fossorial rodent prey for survival. Considering these requirements, the recovery team recommends that American Badger dens and areas determined to support available prey within foraging range of active badger dens be considered in developing a habitat regulation.
For the purposes of this recovery strategy, burrows that American Badgers actively or regularly occupy as a residence or use in rearing young are referred to as “dens.” Burrows that badgers create for foraging and capture of prey are not considered to be dens unless they are also used as a residence.
Dens have been determined to be a central component in the life of badgers (Newhouse and Kinley 1999). Between periods of foraging activity, badgers use and reuse dens as temporary residences (Lindzey 1978, Newhouse 1999). Dens can also be larger, more complex burrows used for the rearing of young (natal dens) (Lindzey 1976) or for overwintering (Newhouse 1997). In all of these instances, dens provide shelter from climatic conditions (Newhouse and Kinley 1999) and protection from potential predators such as coyotes (Ontario American Badger Recovery Team 2008). Since dens are underground excavations that can extend several metres laterally from the entrance (Newhouse and Davis 2002, Eldridge 2004), a corresponding area surrounding the entrance should be included in the identification of a den feature. Badgers are known to reuse dens more frequently than creating new ones (Lindzey 1987 Newhouse 1999), so the protection of existing, periodically occupied burrows may be important to the survival and recovery of the species in Ontario. The recovery team considers any occupied den or den that monitoring indicates is habitually occupied to be an important residence feature that should be considered for inclusion within the habitat regulation. Since badgers have been found to reuse dens, it is recommended that any identified den feature be protected for at least one year after the last use by an American Badger.
Badger dens have been determined to occur in areas of available prey (Messick 1987), and prey availability is believed to be a determining factor in both the location of den sites and the size of badger home ranges (Newhouse 1999). In Ontario, badgers are therefore likely to select den locations near available populations of groundhogs, cottontails, mice and meadow voles, which are believed to be important prey (Dobbyn 1994, Ontario American Badger Recovery Team 2008). Therefore, it is recommended that any areas that are identified to support available prey species within a determined foraging distance of an occupied American Badger den and that the species is using for foraging or feeding should be considered for inclusionwithin a habitat regulation. Foraging habitat areas may include specific prey burrows or complexes of burrows, as well as the extent or portion of a vegetation community or other spatial area where the prey have been identified to occur.
Most of the lands in southwestern Ontario where the American Badgeris found are privately owned (a large portion of them are actively farmed), near urban and rural areas, and dissected by transportation corridors. This, and the badger’s large range size, will pose significant challenges in establishing habitat restoration and protection. Similar challenges are likely to existin northwestern Ontario, where most documented badger occurrences are in areas already subject to intensive agricultural use and aggregate extraction. However, forest edge habitat (where badger dens have been occasionally observed in southwestern Ontario) is fairly stable. As well, in some parts of Ontario nature reserves, conservation areas and provincial parks also offer good opportunities for both habitat protection (under the Provincial Parks and Conservation Reserves Act) and stewardship. New environmental programs being developed for agriculture (e.g., within the federal government’s Agricultural Policy Framework; the Keystone Agricultural Producers’ Alternate Land Use Program; buffer-related programs through Ducks Unlimited, the Ontario Soil and Crop Improvement Association and local conservation authorities) will also add and enhance wildlife habitat in Ontario in the next decade.
Currently, “significant habitat” of the American Badger in Ontario is protected from development under Ontario’s Planning Act through application of the Provincial Policy Statement. The American Badger receives species protection throughout the province under the ESA 2007. The Act also provides the means to protect American Badger habitat through a regulation. If a habitat regulation is not developed for the species, then its habitat will be protected under the general habitat provisions of the ESA 2007 as of June 30, 2013. These habitat provisions would protect habitat of both southern and northwestern populations of the American Badger under the ESA 2007 and apply on both public and private lands. A small number of historical badger observations on federal lands (First Nations reserves) in southern Ontario are known, so if more recent occurrences of this species and its habitat are identified in these areas, they will also be protected under the federal SARA.
Owing to a lack of research on badgers in Ontario, little is known about the influences of the American Badger on prey populations. Because of the overall rarity of the species in relation to other common predators such as coyotes and feral cats, any impact that enhanced badger numbers have on groundhog, rabbit and small rodent populations is likely to be insignificant.
Any recovery efforts for the population and habitat of the American Badger, which is primarily a grassland species, could have positive impacts on other grassland species, including prey species and several species at risk, such as Barn Owl (Tyto alba), Northern Bobwhite (Colinus virginianus), Henslow’s Sparrow (Ammodramus henslowii) and Karner Blue (Lycaeides melissa samuelis).Partnerships with organizations such as Tallgrass Ontario and the Carolinian Canada Coalition will benefit badger recovery efforts and increase public awareness of and appreciation for the species, as well as other grassland species and habitat. The recovery implementation groups will play a beneficial role in increasing public appreciation of badgers through outreach efforts.
Committee on the Status of Endangered Wildlife in Canada (COSEWIC): The committee responsible for assessing and classifying species at risk in Canada.
Committee on the Status of Species at Risk in Ontario (COSSARO): The committee established under section 3 of the Endangered Species Act, 2007 that is responsible for assessing and classifying species at risk in Ontario.
Conservation status rank: A rank assigned to a species or ecological community that primarily conveys the degree of rarity of the species or community at the global (G), national (N) or subnational (S) level. These ranks, termed G-rank, N-rank and S-rank, are not legal designations. The conservation status of a species or ecosystem is designated by a number from 1 to 5, preceded by the letter G, N or S reflecting the appropriate geographic scale of the assessment. The numbers mean the following:
- 1 = critically imperilled
- 2 = imperilled
- 3 = vulnerable
- 4 = apparently secure
- 5 = secure
Endangered Species Act, 2007 (ESA 2007): The provincial legislation that provides protection to species at risk in Ontario.
Species at Risk Act (SARA): The federal legislation that provides protection to species at risk in Canada. This act establishes Schedule 1 as the legal list of wildlife species at risk to which the SARA provisions apply. Schedules 2 and 3 contain lists of species that at the time the act came into force needed to be reassessed. After species on Schedule 2 and 3 are reassessed and found to be at risk, they undergo the SARA listing process to be included in Schedule 1.
Species at Risk in Ontario (SARO) List: The regulation made under section 7 of the Endangered Species Act, 2007 that provides the official status classification of species at risk in Ontario. This list was first published in 2004 as a policy and became a regulation in 2008.
Apps, C.D., N.J. Newhouse, and T.A. Kinley. 2001. Habitat associations of American badgers in southeast British Columbia. Technical report to Columbia Basin Fish and Wildlife Compensation Program, Nelson, B.C.; East Kootenay Environmental Society, Kimberley, B.C.; Tembec Industries, B.C. Division, Cranbrook, B.C.; and Parks Canada Agency, Radium Hot Springs, B.C.
Baker, R.H. 1983. Michigan Mammals, Michigan State University Press, East Lansing, Michigan. 642 pp.
Collins, S.L., and D.J. Gibson. 1990. Effects of fire on community structure in tallgrass and mixed-grass prairie. Pp. 81-98, in S.L. Collins and L.L. Wallace (eds.). Fire in North American Tallgrass Prairies, University of Oklahoma Press, Norman, Oklahoma.
Delaney, K., L. Rodger, A. Woodliffe, G. Rhynard, and P. Morris. 2000. Planting the Seed. A Guide to Establishing Prairie and Meadow Communities in Southern Ontario. Environment Canada.
Dobbyn, J. 1994. Atlas of the Mammals of Ontario. Federation of Ontario Naturalists, Toronto, Ontario. p. 92.
Eldridge, D.J. 2004. Mounds of the American Badger (Taxidea taxus): significant features of North American shrub-steppe ecosystems. Journal of Mammology 85(6):1060-1067.
Gremillion-Smith, C. 1985. Range extension of the badger (Taxidea taxus) in southern Illinois. Transactions of the Illinois Academy of Science 78:111-114.
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|Ron Gould (Chair)||OMNR, Aylmer District|
|Jeff Bowman||OMNR, Wildlife Research and Development Section|
|Peter Carson||Norfolk Field Naturalists, Tallgrass Ontario|
|Jenn Chikoski||OMNR, Thunder Bay District|
|Todd Farrell||Nature Conservancy of Canada|
|Mary Gartshore||Norfolk Field Naturalists|
|Cathy Quinlan||Upper Thames River Conservation Authority|
|Bernt Solymár||EarthTramper Consulting Inc.|
|John Vandenbroeck||OMNR, Fort Frances District|
|Advisors to Recovery Team|
|Maria Franke||Toronto Zoo|
|Hilary Gignac||OMNR, Northwest Region|
|Chris Heydon||OMNR, Wildlife Section|
|Chris Risley||OMNR, Species at Risk Branch|
|Carrie Sadowski||OMNR, Wildlife Research and Development Section|
|Don Sutherland||OMNR, NHIC|
|Allen Woodliffe||OMNR, Aylmer District|
PART 3 - American Badger: Ontario Government Response Statement, prepared by the Ontario Ministry of Natural Resources
Ministry of Natural Resources
Natural. Valued. Protected.
Protecting and Recovering Species at Risk in Ontario
Species at risk recovery is a key part of protecting Ontario’s biodiversity. Biodiversity – the variety of living organisms on Earth – provides us with clean air and water, food, fibre, medicine and other resources that we need to survive.
The Endangered Species Act, 2007 (ESA) is the Government of Ontario’s legislative commitment to protecting and recovering species at risk and their habitats. As soon as a species is listed as extirpated, endangered or threatened under the ESA, it is automatically protected from harm or harassment. Also, immediately upon listing, the habitats of endangered and threatened species are protected from damage or
Under the ESA, the Ministry of Natural Resources (the Ministry) must ensure that a recovery strategy is prepared for each species that is listed as endangered or threatened. A recovery strategy provides science-based advice to government on what is required to achieve recovery of a species.
Government Response Statements
Within nine months after a recovery strategy is prepared, the ESA requires the Ministry to publish a statement summarizing the government’s intended actions and priorities in response to the recovery strategy. The recovery strategy for American Badger (PDF; 637 KB) was completed on February 18, 2010.
The response statement is the government’s policy response to the scientific advice provided in the recovery strategy. In addition to the strategy, the response statement is based on input from stakeholders, other jurisdictions, Aboriginal communities and members of the public. It reflects the best available traditional, local and scientific knowledge at this time and may be adapted if new information becomes available. In implementing the actions in the response statement, the ESA allows the Ministry to determine what is feasible, taking into account social and economic factors.
The American Badger is a short, sturdy member of the weasel family. It is found primarily in southwestern Ontario, but may also be found in the northwestern part of the province in the Thunder Bay and Rainy River areas. Habitat loss and degradation of grasslands in Ontario are two of the greatest threats to the American Badger.
Moving Forward to Protect and Recover American Badger
The American Badger is listed as an endangered species under the ESA which protects both the animal and its habitat. The Government of Ontario has demonstrated its commitment to protecting the American Badger by prescribing its specific habitat in regulation. The ESA prohibits any damage or destruction of that habitat without authorization. Such authorization would require that conditions established by the Ministry of Natural Resources be met.
The government’s goal for the recovery of the American Badger is to achieve a
reproductively sustainable and secure population throughout its current range in Ontario.
Protecting and recovering species at risk is a shared responsibility. No single agency or organization has the knowledge, authority, or financial resources to protect and recover all of Ontario’s species at risk. Successful recovery requires inter-governmental co-operation and the involvement of many individuals, organizations and communities.
In developing the government response statement, the Ministry considered what actions are feasible for the government to lead directly, and what actions are feasible for the government to support its conservation partners to undertake.
To help protect and recover the American Badger, the government will directly undertake the following actions:
Educate other agencies and planning authorities on the requirement to consider the protection of the American Badger and its habitat in planning activities and environmental assessment processes.
Encourage the submission of American Badger data to the Ministry of Natural Resources’ central repository at the Natural Heritage Information Centre.
Undertake communications and outreach to increase public awareness of species at risk in Ontario.
Protect the American Badger through the ESA and enforce the regulation protecting the specific habitat of the species.
Support conservation, agency, municipal and industry partners to undertake activities to protect and recover the American Badger. Support will be provided through funding, agreements, permits (including conditions) and advisory services.
Establish and communicate annual priority actions for government support in order to encourage collaboration and reduce duplication of efforts.
The government endorses the following actions as being necessary for the protection and recovery of the American Badger. Actions which are noted as “high” will be given priority consideration for funding or for authorizations under the ESA. The government will focus its support on these high priority actions over the next five years.
Focus Area: Research and Monitoring
Objective: Address knowledge gaps on American Badger ecology, distribution, population dynamics and habitat use in the species’ Ontario range.
1. (HIGH) Determine the species’ habitat use and movement through radio-telemetry studies and an assessment of habitat availability.
2. (HIGH) Investigate the diet of American Badgers and the ecology of their prey species.
3. (HIGH) Develop and implement monitoring and reporting protocols to improve understanding of American Badger distribution and abundance. This may include collecting and analyzing road killed and trapped specimens as well as scat and hair samples.
4. Investigate the connectivity and genetic similarities between populations of American Badger to improve knowledge on barriers to movement and gene flow.
Focus Area: Threat Management
Objective: Identify and reduce or eliminate known human-related threats to
American Badgers in Ontario.
5. (HIGH) Develop and implement, where feasible, options to reduce road mortality and incidental trapping.
6. Investigate the cause of death for all samples found.
7. Develop and implement protocols for dealing with injured animals and for public reporting on injured or orphaned American Badgers. Maintain working relationships with wildlife rehabilitation centres within the species range.
8. As opportunities arise, support the securement of habitat of American Badger through existing land securement and stewardship programs.
Focus Area: Awareness
Objective: Increase public awareness of and appreciation for the American Badger and its ecological role in grassland and agricultural ecosystems.
9. Develop outreach and monitoring materials for distribution to rural communities, farmers, trappers and aggregate sectors and conduct information workshops for stakeholder groups.
10. Co-operate with recovery initiatives that target grassland ecosystems and species at risk to share information and seek opportunities to build on existing activities.
11. Maintain a badger hotline for the reporting of sightings by the public.
Financial support for the implementation of actions may be available through the Species at Risk Stewardship Fund, Species at Risk Farm Incentive Program, or Community Fisheries and Wildlife Involvement Program. Conservation partners are encouraged to discuss project proposals related to the actions in this response statement with the Ministry of Natural Resources. The Ministry can also advise whether any authorizations under the ESA or other legislation may be required for undertaking the project.
Implementation of the actions may be subject to changing priorities across the multitude of species at risk, available resources and the capacity of partners to undertake recovery activities. Where appropriate, the implementation of actions for multiple species will be co-ordinated across government response statements.
The ESA requires the Ministry to conduct a review of progress towards protecting and recovering a species not later than five years from the publication of this response statement. The review will help identify whether adjustments are needed to achieve the protection and recovery of the American Badger.
We would like to thank everyone who participated in the development of the “Recovery Strategy for the American Badger in Ontario” for their dedication to protecting and recovering species at risk.
For additional information:
Visit the species at risk website
Contact your MNR district office Contact the Natural Resources Information Centre
Report a problem or mistake on this page
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