Juvenile and Adult Thayer's Gulls in Barrie, Ontario

Juvenile Thayer's Gull beginning to molt into first winter plumage. Barrie on 26 December 2015


View of its pale-tipped primaries and pale rump. 26 December 2015.


It was preening, showing its rump and pale underwing. 26 December 2015.


Adult Thayer's Gull previously reported on 17 and 18 December. See link: Adult Thayers Gull Barrie


Link to Juvenile Thayer's Gull in Barrie on 11 December 2015