n.small North American diving duck; males have bushy head plumage
同义词:butterballdipperBucephela albeola
英汉双解大词典
bufflehead/ˈbʌfəlˌhɛd/
1.
N(名词)
a small North American diving duck, Bucephala (or Glaucionetta) albeola: the male has black-and-white plumage and a fluffy head 北美白帽鹊鸭 (Also called butterball)