The glaucous gull (Larus hyperboreus) is a large gull, the second largest gull in the world which breeds in the Arctic regions of the Northern Hemisphere and the Atlantic coasts of Europe. It is migratory, wintering from in the North Atlantic and North Pacific oceans as far south as the British Isles and northernmost states of the USA, also on the Great Lakes. A few birds sometimes reach the southern USA and northern Mexico.
This species breeds colonially or singly on coasts and cliffs, making a lined nest on the ground or cliff. Normally, 2–4 light brown eggs with dark chocolate splotches are laid.
Glaucous gulls — large gray-and-white seabirds that inhabit the Arctic — frequently attempted to steal fish from narwhals, significantly reducing the amount of prey they were able to catch.
“It’s a very long spiral tooth that can grow to 10 feet in length,” O’Corry-Crow said ... Glaucous gulls also were observed engaging in kleptoparasitism, a term for stealing food, although their attempts were unsuccessful.
ADVERTISEMENT ... They also used the tusks in interactions with seabirds, like glaucous gulls (Larus hyperboreus), who were attempting to snatch their hard-earned prey. ... ... ADVERTISEMENT ... ADVERTISEMENT ... .