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, January 02 2010, Choshi, Japan. Picture: Chris Gibbins.

Please visit Chris's Blog for many more pictures! A bird in an alert, head-flattened posture. The bill is deep with a slight bulge at the gonys.