American Herring Gull (smithsonianus)

(last update: October 30, 2015)

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

Slaty-backed Gull (schistisagus) 2nd cycle, February 13 2013, Rausu, Japan. Picture: Mike Buckland.

Dark bird on underparts and head. Fresh scapulars indicate upperpart colour of adult plumage. 2nd gen flight feathers with much dark in tail.