American Herring Gull (smithsonianus)

(last update: October 30, 2015)

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

American Herring Gull (smithsonianus) adult, February 24 2008, St. John's, Newfoundland, Canada. Picture: Bruce Mactavish.

Full sub-terminal black band on P10. White innerweb on P10 end in sharp angle, quite abrupt, not gradually (oblique). Relatively long tongue on P10. Minute mirror on P9 confined to inner-webs. P8-P6 with black "bayonet" along outer edge. P5 with characteristic black W pattern.