Clangula, from clango — resound, clank; diminutive of clanga; = clangor,'any sharp sound, especially the scream of Cranes.
Head crested full and puffy. Differ from other Sea-Ducks in preferring fresh water. Bill short and tapering slightly. Lamellae short, stout, and not close together. Tail much rounded, of sixteen feathers. Tarsus scutellate in front. Hind toe broadly lobed. Northern Hemisphere.