Males have bushy head plumage

• Stupid bird?
• Small North American diving duck

Wiktionary Word definitions in Wiktionary
n. 1 A duck in the goldeneye genus, ''Bucephala albeola''. 2 (context obsolete English) One who has a large head; a heavy, stupid fellow.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Buffel duck \Buf"fel duck\ (b[u^]f"f[e^]l d[u^]k`). [See Buffalo .] (Zo["o]l.) A small duck ( Charitonetta albeola ); the spirit duck, or butterball. The head of the male is covered with numerous elongated feathers, and thus appears large. Called also bufflehead ...

Wikipedia Word definitions in Wikipedia
The bufflehead ( Bucephala albeola ) is a small American sea duck of the genus Bucephala , the goldeneyes . This species was first described by Linnaeus in his Systema naturae in 1758 as Anas albeola . The genus name is derived from Ancient Greek boukephalos ...

WordNet Word definitions in WordNet
n. small North American diving duck; males have bushy head plumage [syn: butterball , dipper , Bucephela albeola ]

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
small North American duck, 1858 ( buffle-headed duck attested from 1831), from buffle (1510s), obsolete variant of buffalo (n.) + head (n.). So called for its large head; earlier the noun meant "stupid person" (1650s; compare buffle-headed "big-headed," ...