razorbill

North Atlantic sea bird Alca torda of the auk family, order Charadriiformes, which breeds on cliffs and migrates south in winter. It is about 40 cm/16 in long, has a large curved beak, and is black above and white below. It uses its wings as paddles when diving. Razorbills make no nest; the female lays a single egg, which is white with brown markings. They are common off Newfoundland.