Bird
Hoatzin
Opisthocomus hoazinAlso known as Stinkbird, Canje Pheasant, Hoactzin
Hoatzins are unique folivorous birds that digest leaves using a specialized foregut fermentation crop, giving them a distinct musky odor often compared to fresh cow manure. Nestlings possess functional claws on their wing digits, allowing them to climb back up into canopy foliage if they drop into the water below to escape predators. Social and vocal, these clumsy flyers spend their days lounging in small family groups along marshy riverbanks across tropical South America.
FolivorousTropicalUnique Claws
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & preyArum leaves, Mangrove leaves, Marsh plant shoots
Predators
- Harpy Eagle
- Black Caiman
- Ocelot
ThreatsHabitat destruction and human disturbance
HabitatsSwamps, mangroves, and riparian forests
Life span15–30 years
Classification
- FamilyOpisthocomidae
- SpeciesOpisthocomus hoazin
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe from a respectful distance along riverbanks.
Responsible observation
- Scan River Margins: Look for unkempt, reddish-brown shapes perched in low branches near the water edge.
- Listen for Calls: Listen for raspy grunts, hisses, and wheezes drifting from dense riverside foliage.
- Keep Distance: Avoid approaching nesting colonies in boats, as stressed chicks may leap prematurely into the water.
Predator (c) Christoph Moning, some rights reserved (CC BY), uploaded by Christoph Moning · cc-by
Predator (c) Matheus Oliveira, some rights reserved (CC BY) · cc-by
Frequent Companion (c) Fernando Flores, some rights reserved (CC BY-SA) · cc-by-sa
Frequent Companion (c) Pablo H Capovilla, some rights reserved (CC BY) · cc-by
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