Gulls or seagulls are seabirds of the family Laridae in the suborder Lari. They are most closely related to the terns Sternidae and only distantly related to auks, skimmers, and more distantly to the waders. 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. Sigma 150-600 Sport telezoom lens. 4K UHD 3840×2160 30p.