American Herring Gull (smithsonianus)(last update: October 30, 2015) |
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putative American Herring Gull (smithsonianus) adult, Azores, Junco, Terceira, February 13 2011. Picture: Vincent Legrand.See also: here. Look at the wing-tip pattern, especially the W-shape on P6, P7 and the grey tongue on P8, P9 and the grey mantel. This is like an 'argenteus'-type grey bird, but the bird is huge.
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