American Herring Gull (smithsonianus)

(last update: October 30, 2015)

Coordinators:
Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

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!

Orbital ring red, small gonys spot on yellow bill and yellow iris with limited speckling. Broad tertial crescents and secondary tips. Mirror on P10, and full subterminal band on P10; no mirror on P9. Note string of pearls (white tongue tips) on outer primaries. Heavily marked head.