Thursday, May 15, 2008

Blue-winged and Golden-winged Warblers

Blue-winged Warbler
Some of the county roads running south from Stony Lake hold good habitat for Golden-winged Warbler, a species designated as threatened species by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC). There is evidence that Golden-winged Warbler populations are negatively impacted through introgressive hybridization with the very closely related Blue-winged Warbler. We hope to monitor suitable sites in the coming weeks, when the males are singing on territory. A casual drive today turned up a single male Blue-winged Warbler (see photo) and a single male Golden-winged Warbler.

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