Black-headed duck
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The black-headed duck is a South American duck in subfamily Oxyurinae of family Anatidae. It is found in Argentina, Bolivia, Brazil, Chile, Paraguay, and Uruguay. Wikipedia
Scientific name: Heteronetta atricapilla
Mass: 0.96 – 1.4 lbs
Conservation status: Least Concern (Population stable)
Genus: Heteronetta; Salvadori, 1866
Order: Anseriformes
Source: Encyclopedia of Life