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) adult, October 02 2007, Isohama, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa.

Please visit Aizawa's Blog for many more pictures!

Last stage of complete moult, with P8 fully grown, P9-P10 growing. Note white tongue tips on primaries. Pale iris, pink orbital ring.