Saturday, September 17, 2011

Black-throated Blue Warbler

On 16 September 2011, I banded a first-year male Black-throated Blue Warbler. Curiously, this date is the same as I banded this relatively uncommon species (in Rice County) last year. While fall females can be confusing, males, as you can see, molt directly into a bright fall plumage. On the females, look for the white square wing patch; but be warned that some females lack even that identifying feature. For more information and a photograph of the female, see my post of 17 September 2010.

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