Razorbill birds, also known as AUKS, are a species of seabird that are found in the North Atlantic Ocean. They are characterized by their black and white plumage and their large, flat bills. Razorbills are strong swimmers and can dive up to 60 meters in search of food. They feed mainly on small fish, crustaceans, and mollusks. Razorbills breed in colonies on rocky cliffs and islands, and they are listed as a species of least concern by the International Union for Conservation of Nature.