; class Aves, order Procellariiformes)
A family of large sea-birds that have long, narrow wings, a large head, and a long, strong bill with a hooked tip and tubular nostrils. They have short legs, webbed feet, and a reduced or absent hallux. They are pelagic, often gregarious, and have a powerful, gliding flight. They feed on fish, squid, and other marine animals, coming to land only to nest. Diomedea exulans (wandering albatross) has the largest wing-span of any bird, measuring 3.5 m. There are two genera, with 13 species, found in southern oceans and in the N. Pacific, occasionally wandering into other regions.
Subjects: Zoology and Animal Sciences.