Great Black-backed Gull, Larus marinus


Great Black-backed Gull, breeding plumage, 7/9/10, Revere Beach, MA
This largest of the North American gulls is common along the east coast, and almost never found in the west. The red orbital ring marks the birds above and just below as in breeding plumage.


Great Black-backed Gull, breeding plumage, 5/25/09, Eastham, Cape Cod, MA


Great Black-backed Gull, 9/17/05, Hammonasset State Beach, Madison, CT
Slight smudging on the head and faint streaking on the nape while the rest of the white areas remain clear mark the non-breeding plumage.


Great Black-backed Gull, third cycle, 9/17/05, Hammonasset State Beach, Madison, CT
Third winter plumage, much like adult, but some brown feathering remains, some dark on tail, and dark ring rather than red gonys spot on bill.


Great Black-backed Gull, first cycle, 9/17/05, Lighthouse Park, New Haven, CT
Checkered pattern above and pale head mark the first-winter bird, above and below.


Great Black-backed Gull, first cycle, 9/18/05, Lighthouse Park, New Haven, CT