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Sarkidiornis is a genus within the family Anatidae. Sarkidiornis is sometimes considered a monotypic genus with its sole member the knob-billed duck (S. melanotos), a cosmopolitan species. Most taxonomic authorities[who?], however, split the species into two:
| Image | Scientific name | Common name | Distribution |
|---|---|---|---|
 |
Sarkidiornis melanotos | Knob-billed duck | Sub-Saharan Africa, Madagascar and Southern Asia from Pakistan to Laos and extreme southern China |
 |
Sarkidiornis sylvicola | Comb duck | eastern Paraguay, southeastern Brazil and extreme northeastern Argentina |
References
- https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=175243#null ITIS reference
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