A sea-bird allied to the great auk, which is now extinct. It has wings large in proportion to its size. It is 17 or 18 inches long, and its wing is 7 or 8 inches, and when extended the wings are 27 inches wide. It has a glossy black head, a dark-brown throat, a white breast, and lower body of white. Its bill is strong and hooked. It lays one large egg of a greenish color. This bird abounds in the Arctic seas, migrating southward in the cold season.