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, December 25 2013, Shibetsu Harbor, Shibetsu, Hokkaido, Japan. Picture: Ian Davies.

Please visit Ian's Flickr Photostream for more pictures!

Small gonys spot, pale yellow base on bill and yellow iris with much speckling. Broad tertial crescents and secondary tips. Mirror on P10, but not on P9. Note string of pearls (white tongue tips) on outer primaries. Heavily marked head.