mandarin duck 鸳鸯
mandarin duck[ noun ]
showy crested Asiatic duck; often domesticated
<noun.animal>
mandarin duck \mandarin duck\ n.
A showy crested Asiatic duck ({Aix galericulata}, formerly
{Dendronessa galericulata}), often domesticated, and regarded
by the Chinese as an emblem of conjugal affection.
[1913 Webster + WordNet 1.5]