Razor-billed birds are a type of auk, which is a seabird that is found in the Northern Hemisphere. Auk species include puffins, guillemots, murres, and razorbills. Razorbills are characterized by their black and white plumage, long wings, and a distinctive, sharply pointed bill. They are found in coastal areas of the North Atlantic and Arctic Oceans, where they feed on small fish and crustaceans.