A wild duck(Anas platyrhynchos)of which the male has a green head and neck.Most domestic ducks descend from the mallard.

 
  • 绿头鸭一种野鸭(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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