Canada warbler COSEWIC assessment and status report: chapter 1

COSEWIC Assessment Summary

Assessment Summary – April 2008

Common name: Canada Warbler

Scientific name: Wilsonia canadensis

Status: Threatened

Reason for designation: Most (80%) of the breeding range of this species occurs in Canada. While regional trends may vary, overall the species has experienced a significant long-term decline. This decline is particularly evident in the case of the species’ Canadian range and there is no indication that this trend will be reversed. The reasons for the decline are unclear, but loss of primary forest on the wintering grounds in South America is a potential cause.

Occurrence: Yukon Territory, Northwest Territories, British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec,New Brunswick, Prince Edward Island, Nova Scotia

Status history: Designated Threatened in April 2008. Assessment based on a new status report.

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