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Knob-billed Duck


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About the Knob-billed Duck

Also known as: Comb Duck, African Comb Duck, Knob-billed Goose, Nakta Duck

The Knob-billed Duck is a large species of duck found in tropical freshwater wetlands across parts of South America, Africa, and Asia. They are named for the large bill protrusion found in males. Across South America, the species is known as the Comb Duck.

Knob-billed Ducks eat by dabbling vegetation in water or on land. They may also eat small invertebrates.

While the population trend for the Knob-billed Duck is decreasing, the species is of conservation Least Concern due to its very large range. It is threatened by hunting, habitat loss, and environmental toxins.

Details & Stats

Hatched Added to Birdorable on: 10 November 2013
Scientific Name Sarkidiornis melanotos
  • Anseriformes
  • Anatidae
  • Sarkidiornis
  • S. melanotos
Birdorable Family Ducks & Geese
Conservation Status Least Concern
  • Least Concern (LC)
  • Near Threatened (NT)
  • Vulnerable (VU)
  • Endangered (EN)
  • Critically Endangered (CR)
  • Extinct in the Wild (EW)
  • Extinct (EX)
Source: IUCN Red List
(as of 29 September 2017)
Units: Imperial Metric
22 to 30 inches
46 to 57 inches
36.8 to 102.4 ounces

International Names

  • Pato-de-crista (Brazilian)
  • 瘤鸭 (Chinese)
  • pižmovka hřebenatá (Czech)
  • Afrikansk Knopgås (Danish)
  • Knobbeleend (Dutch)
  • kyhmysorsa (Finnish)
  • Sarcidiorne à bosse (French)
  • Glanzente (German)
  • Anatra bernoccoluta (Italian)
  • コブガモ [kobugamo] (Japanese)
  • Kamand (Norwegian)
  • dziwonos szaroboczny (Polish)
  • Гребенчатая утка (Russian)
  • Pato crestudo (Spanish)
  • Knöland (Swedish)