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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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 90 degrees angle, quite abrupt, not gradually (oblique). Relatively short tongue on P10 (normally on average longer for this taxon).