Great Black-backed Gull

Great Black-backed Gull, Larus marinus is a species of gull in the Larus genus. It is the largest gull in North America as well as the world, the Glaucous Gull being comparable in size.

Description
This is the largest gull in the world, measuring 25 - 30 in and a wingspan of 60 - 66 in. The adult bird is a white gull with a black mantle; snow-white head and tail; yellow bill with red spot near tip; pink legs and feet.