American Herring Gull (smithsonianus)

(last update: October 30, 2015)
Coordinators:
Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

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Slaty-backed Gull (schistisagus) 2nd cycle (3CY), February 23 2014, Choshi, Chiba, Japan. Picture: Shiroto.

Visit Shiroto's website for many more gull pictures from Japan!

Some scapulars show the adult upperpart grey tone, which is as in Lesser Black-backed Gull. Tail largely dark and rump is white. Pale iris and faded brown 2nd gen primaries. 2nd gen secondaries with only narrow white tips.