Lake Duck
Oxyura vittata
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À propos
A stiff-tailed duck (~665 g) of southern South America, family Anatidae, with males displaying ruddy plumage and a bright blue bill. Inhabits freshwater lakes, ponds, and marshes from Brazil to Patagonia. Dives for aquatic plants, seeds, and invertebrates. Least Concern; notable for the proportionally longest penis of any vertebrate relative to body size.
Physical Description
| Measurement | Value | Imperial |
|---|---|---|
| Envergure | 27,6 cm | 10.9 in |
| Poids | 665,0 g | 23.46 oz |
Identification
Plumage
Male is dark chestnut-brown with black head, pale whitish-grey cheeks, and cobalt-blue bill. Female is brownish-buff with streaked upperparts and a distinctive pale supercilium; undertail coverts whitish.
Habitat & Range
Répartition géographique
Resident in southern South America from central Chile and central Argentina south to Tierra del Fuego. Found on lowland lakes and lagoons.
Diet & Feeding
Dives for aquatic invertebrates and plant seeds in South American freshwater lakes and marshes. Feeds in dense emergent vegetation.
Statut de conservation
Comportement et reproduction
Nidification
Nest type: PL. Incubation: 23-24 days. Fledging: 56-63 days.
Taille de la couvée
3-5
Son
Chant
Male produces a mechanical, drumming staccato call; female gives a soft, nasal quack. Drumming display resembles other Oxyura stiff-tails; heard at dawn on Andean and Patagonian lakes.
Taxonomie
| Kingdom | Animalia |
| Phylum | Chordata |
| Class | Aves |
| Ordre | Anseriformes (Waterfowl) |
| Famille | Anatidae (Ducks, Geese & Swans) |
| Genus | Oxyura |
| Espèces | Oxyura vittata |
Distribution
Lake Duck has been recorded in 5 countries.
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External Databases
Foire aux questions
What does the Lake Duck eat?
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What does the Lake Duck sound like?
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Similar Birds
Other species in the Anatidae family