Torrent duck

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Torrent Duck: one species or three?

With a wide distribution on Andean rivers from Venezula to southern Chile, Torrent Duck (Merganetta armata) is generally treated as a single species comprising three to six subspecies. The subspecies list below represents the congruent views of IOC (worldbirdnames.org), Clements, and Birdlife/HBW taxonomies: 

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The Torrent Duck (Merganetta armata) is a small duck from the family of water birds that includes ducks, geese, and swans (Anatidae).
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