California Gull at Niagara

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California Gull (top right) in third basic (winter) plumage with two Herring Gulls. Note slightly darker mantle than the two Herring Gulls. Photo location is about 400 metres south of Sir Adam Beck lookout on the Canadian side of the Niagara River. 21 November 2009.


It has greenish-grey legs and a dark eye. 21 November 2009.


Photos for documentation purposes. Left shows California Gull underwing pattern with more extensive black in the primaries than Herring Gull, white mirror on P10, and smaller white mirror on P9. Right shows broken tail band. Photo 26 November 2009, 400 metres south of Sir Adam Beck on the Niagara River.