American Herring Gull (smithsonianus)

(last update: October 30, 2015)

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

American Herring Gull (smithsonianus) sub-adult, October 22 2014, St John's, Newfoundland. Picture: Alvan Buckley.

Bird with much white in the tail. Either 3rd or 4th cycle bird (extent of grey and size of P10 mirror probably indicate latter).