Great Black Backed Gull
The Black Backed Gull is the largest gull in the world. Head and underparts streaked with gray brown; face and nape paler. Back patterned blackish-brown, with white edgings forming a checkerboard pattern. Wing flight feathers blackish-brown. Tail white with zigzag bars and spots at base and a broken blackish band near the tip. Bill brownish-black with white tip. Eyes dark; eyering yellowish-brown. Legs dark bluish-gray with some pink tones.
The Great Black-backed Gull is primarily a coastal species. A bird of the North Atlantic, it has been expanding its breeding and wintering ranges farther south along the East Coast and into the Great Lakes.