Gulls or seagulls are seabirds of the family Laridae in the suborder Lari. They are most closely related to the terns (family Sternidae) , Gulls are typically medium to large birds, usually grey or white, often with black markings on the head or wings. They typically have harsh wailing or squawking calls, stout, longish bills, and webbed feet. Most gulls, particularly Larus species, are ground-nesting carnivores, which take live food or scavenge opportunistically. Live food often includes crabs