With A. georgica (and A. eatoni) sometimes placed in genus Dafila. One genetic study suggested that present species forms a monophyletic group with A. bahamensis and A. georgica#R. Southern Hemisphere species A. eatoni (with drygalskii) frequently considered conspecific with present species (see below). Has hybridized in the wild with Netta rufina#R#R. Monotypic.
Most of Nearctic and Palearctic. In winter S to N South America, Africa and S & E Asia.
Food and feeding
Status and conservation
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