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) 3rd cycle (3CY), October 12 2015, Lake County, Illinois. Picture: Amar Ayyash.

Bold white tips on outer primaries, in combination with many immature patterned coverts.