A wild duck (Anas platyrhynchos) of which the male has a green head and neck. Most domestic ducks descend from the mallard.
一种野鸭(绿头鸭),其雄鸟具有绿色的头和颈。大部分驯化了的家鸭都是绿头鸭的后裔。
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The Li men jostle to sell me supper, all of it live: white-breasted waterhens, little egrets, a black-crowned night heron and a spot-billed duck, the only duck where male and female look alike.