Mammal · GBIF taxon 2436663
Black-capped Squirrel Monkey
Saimiri boliviensisAlso known as Bolivian Squirrel Monkey, Black-headed Squirrel Monkey
Black-capped squirrel monkeys navigate the Amazonian canopy in large, highly social troops, using their long, non-prehensile tails primarily for balance as they leap between branches. These vocal primates communicate with a complex repertoire of chirps, peeps, and chucks to coordinate movement and alert others to predators. Females form the stable core of the group, establishing dominant hierarchies, while mature males live in separate bachelor groups for most of the year.
SocialArborealVocal
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Katydids
- Spiders
- Figs
Predators
- Harpy Eagle
- Jaguar
- Boa Constrictor
ThreatsHabitat fragmentation, pet trade, and localized hunting
HabitatsTropical rainforests, riverine forests, and plantations
Life span15 to 20 years in the wild
Size / weightNot available
Classification
- FamilyCebidae
- SpeciesSaimiri boliviensis
Native
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Capable of a painful bite if cornered or handled; observe quietly from a safe distance.
- Why it is dangerous
- While small, they possess sharp canine teeth and can inflict deep scratches or bites if they feel threatened or cornered.
- How to recognize a risky encounter
- Look for the distinctive black or dark grey crown on the head, bright yellow-orange arms, and a long, black-tipped tail.
- What to do
- Never attempt to touch, feed, or capture wild monkeys; maintain a respectful distance and use binoculars for close views.
Responsible observation
- Listen closely: Listen for high-pitched bird-like chirping and whistling in the canopy to locate active troops.
- Keep your distance: Avoid feeding or approaching them, as this disrupts their natural foraging and social structures.
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