French: Érismature ornée German: Bindenruderente Spanish: Malvasía argentina
Other common names:
Argentine Blue-billed Duck
R. A. Philippi [Krumwiede]
Most of Chile and Argentina (except highlands) S to Tierra del Fuego, rarely in S Uruguay; in winter extending N to SE Brazil and Paraguay.
36–46 cm; male 600–850 g, female 510–700 g. Male resembles that of O. ferruginea but is smaller, flatter-headed, proportionately longer-tailed and... read more
Displaying male produces mechanical rustling noises and soft, popping “pup-pup-pup-prup” but is... read more
Shallow freshwater lakes, small pools and marshes with extensive bordering vegetation. Outside... read more
Food and feeding
Few data available, but diet presumably based on seeds, plant remains and small aquatic invertebrates. Feeds by sieving bottom debris while... read more
Season Oct–Jan in Argentina, but perhaps more prolonged with two peaks in Chile. Mating system apparently more strongly monogamous... read more
Partially migratory; birds of southernmost populations leave breeding grounds to winter in more... read more
Status and conservation
Not globally threatened (Least Concern). Generally local and uncommon throughout its range, with crude population estimate of 10,000–100,000 individuals in 1990s.... read more
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