Although variable in size, the Great Black-backed Gull is on average the largest of all gulls, with some individuals weighing more than five pounds. In adult plumage, attained in four years, it has a large head and heavy bill, yellow eye (usually), and light pink legs. Its dark gray-black mantle is darker than that of any other gull likely to be seen in North American.
First Sighting of Year
|Thursday, January 1, 2015||US-1 N South Portland ME United States|
|Friday, January 1, 2016||Leeman Hwy Bath ME United States|
|Sunday, January 1, 2017||50 Cottage Rd South Portland ME United States|
|Sunday, January 7, 2018||3115 Bristol Rd Bristol ME United States|