whistling duck

whistling duck

noun
any of several long-legged, chiefly tropical ducks of the genus Dendrocygna, most of which have whistling cries.

Origin:
1690–1700

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Britannica
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whistling duck

(Dendrocygna), any of eight species of long-legged and long-necked ducks that utter sibilant cries and may make whirring wing sounds in flight; these distinctive ducks are separated from other members of the family Anatidae (q.v.; order Anseriformes) as a tribe Dendrocygnini. Whistling ducks are sociable though aggressive. The sexes are nearly identical in plumage and behaviour, which includes mutual preening in some species. Whistling ducks fly with slow wingbeats and legs trailing. They sometimes perch in trees or on posts and walk readily with an upright stance. Although several species nest in hollow trees, ground sites are more often used. Drakes help build the nest and rear the young; in some species they also share in incubation

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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