Saturday, October 13, 2012

Oct 12, 2012: Bonaparte's Gull

This adult (nonbreeding plumage) Bonaparte's Gull was found on the mudflat located at the SW corner of the south lake on Friday (10/12/12). This small gull is one of the black-headed (breeding plumage) forms. In flight, look for the white wedge along the leading edge of the wings. They commonly pass through during migration (Spring & Fall), but not in the numbers as other gulls.

Wolf Oesterreich

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