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, January 25 2011, Choshi, Japan. Picture: Terry Townshend.

Please visit Terry's blog Birding Beijing!

Note broad white trailing edge on secondaries. Mirror on P10 but none on P9. In strong light upperparts appear slate grey. Note string of pearls (white tongue tips) on outer primaries. Iris slightly speckled and pink orbital ring.