American Herring Gull (smithsonianus)(last update: October 30, 2015) |
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Slaty-backed Gull (schistisagus) 2nd cycle, February 13 2013, Rausu, Japan. Picture: Mike Buckland.Pale bird on underparts and head. Fresh scapulars indicate upperpart colour of adult plumage. 2nd gen flight feathers with much dark in tail. Note skirt. |