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, January 08 2013, Niagara River. Picture: Amar Ayyash.

Thayeri pattern on P9-P10 and very deep pale tongues on outer primaries. Two spots on P5.