Comb Duck
Sarkidiornis sylvicola
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderAnseriformes
- FamilyAnatidae (Anàtids)
- GenusSarkidiornis (Comb and Knob-billed Ducks)
- SpeciesSarkidiornis sylvicola (Comb Duck)
The comb duck or American comb duck (Sarkidiornis sylvicola), is an unusual duck found in tropical wetlands in continental South America south to the Paraguay River region in eastern Paraguay, southeastern Brazil and extreme northeastern Argentina, and as a vagrant on Trinidad. Most taxonomic authorities split this species and the knob-billed duck from each other. The comb duck is generally smaller in size when compared to the knob-billed duck, and flanks are darker (black in males, medium grey in females). Wikipedia →
20–30% of wildlife watchers report a Comb Duck sighting in Cordillera Azul National Park, based on 315 days of visitor records from GBIF citizen-science data.
Closest Relatives at Cordillera Azul National Park
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Cordillera Azul National Park | 🇵🇪 Peru | |
| 2 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 3 | Machalilla National Park | 🇪🇨 Ecuador | |
| 4 | Galápagos Islands | 🇪🇨 Ecuador | |
| 5 | Iguazú National Park | 🇦🇷 Argentina |
Quick answers
What are the chances of seeing a Comb Duck in Cordillera Azul National Park?
About 24% of wildlife watchers report a Comb Duck sighting in Cordillera Azul National Park, based on 315 days of visitor records from GBIF citizen-science data.
When is the best time to see Comb Duck in Cordillera Azul National Park?
March has the highest sighting rate for Comb Duck in Cordillera Azul National Park in our monthly data.