American Herring Gull (smithsonianus)

(last update: October 30, 2015)

Slaty-backed Gull (schistisagus) 2nd cycle (3CY), March 15 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto.

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Pale iris. Dark tip on the bill. Some scapulars and MC show the adult upperpart grey tone, which is as in Lesser Black-backed Gull. Tail largely dark and pattern on wing-coverts very simple, plain pale brown with dark shaft or dark triangle centre. Pink legs.