American widgeon the male of which has a white crown.
美洲野鸭雄性的头冠为白色。
American widgeon the male of which has a white crown.
美洲野鸭雄性的头冠为白色。
Wild ducks fly in a V-shape when they are going south for the winter.
野鸭排成V字形飞到
过冬。
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