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Torrent Duck Merganetta armata



  • Year-round
  • Migration
  • Breeding
  • Non-Breeding
Distribution of the Torrent Duck
eBird range map for Torrent Duck

Generated from eBird observations (Year-Round, 1900-present)

Distribution in the Americas

Andean streams and rivers from western Venezuela, Colombia, Ecuador, and northern Peru south to central Chile.

Distribution outside the Americas

no records outside Americas. Few in captivity; mainly in Germany


According to Pernollet et al. (2013) the number of rapids is useful in identifying sections of rivers where Torrent Ducks are present. Well oxygenated waters moving over a rock substratum seem to be key elements for the development of insect larvae especially the filter feeders that constitute the main prey items for Torrent Ducks.  Large emergent rocks are important in these fast-flowing water areas because they slow down water in some points producing the small falls and pools that are selected by the species for diving.

Historical changes


Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable (Birdlife 2016).

Recommended Citation

Torrent Duck (Merganetta armata), In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: