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) sub-adult, March 07 2012, Choshi, Japan. Picture: Peter Adriaens.

Please also visit Peter's Pbase account and his Picasaweb albums for many more pictures!

Another "paler backed" Slaty-backed Gull, and again a sub-adult bird: extensive black on bill, dull iris and extensive winter streaking. Upperparts appear quite pale. Black wingtips, and entirely blackish outerweb of P10 do not suggest influence of Glaucous-winged Gull. Blotchy head markings and thick body with short wing projection do not really recall Vega Gull either.