Golden-winged warbler (Vermivora chrysoptera) COSEWIC assessment and status report: chapter 1

Assessment Summary

 

Assessment Summary – April 2006

Common name: Golden-winged Warbler

Scientific name: Vermivora chrysoptera

Status: Threatened

Reason for designation: This small songbird has declined by 79% over the last 10 years according to Breeding Bird Survey data from Canada. The main threat appears to be competition and genetic swamping (hybridization) from the closely related Blue-winged Warbler, which is spreading north because of habitat change and perhaps climate change.

Occurrence: Manitoba, Ontario, Quebec

Status history: Designated Threatened in April 2006.  Assessment based on a new status report.

 

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