Data for:
Parc de Tsarasaotra (Lac Alarobia)
List:
Anseriformes > Anatidae

White-backed Duck

Thalassornis leuconotus

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Identification

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A smallish, tawny, bulbous-headed duck that sits low in the water, its tail often flush with the surface, giving it a distinctive appearance. When seen well, the white patch at the base of the bill is diagnostic. The namesake white back is usually visible only in flight. Partially nomadic; small groups are found on pans and pools that have emergent aquatic vegetation, especially waterlilies. Mostly quiet; rarely gives a squeaky-toy-like “swit-swit” whistle.

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White-backed Duck

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