Black-capped squirrel monkey
Saimiri boliviensis (I. Geoffroy Saint-Hilaire & de Blainville, 1834)
The black-capped squirrel monkey (Saimiri boliviensis) is a species in the family Cebidae, order Primates. Recorded adults weigh 615 g to 799.7 g and live up to 28.6 years. Its IUCN Red List status is Least Concern.
Quick facts about the black-capped squirrel monkey
- Weight
- 615 g – 799.7 gsrc for Weight
- Length
- Not recorded
- Lifespan
- 19 years – 28.6 yearssrc for Lifespan
- Diet
- Herbivoresrc for Diet
- Longest recorded lifespan
- 30.3 years
- Main food
- Not recorded
- Habitat
- Not recorded
- Gestation
- 163 dayssrc for Gestation
- Young per litter or clutch
- 1src for Young per litter or clutch
- Age at maturity
- 2.99 years – 5 yearssrc for Age at maturity
- Litters or clutches a year
- 1.07src for Litters or clutches a year
- Active
- By day (diurnal)src for Active
- Lifestyle
- Arborealsrc for Lifestyle
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the black-capped squirrel monkey live?
Not recorded
What is the black-capped squirrel monkey?
The black-capped squirrel monkey (Saimiri boliviensis) is a species of New-World monkey native to the upper Amazon basin in Bolivia, western Brazil and eastern Peru. They weigh between 365 and 1,135 g (13 and 40 oz) and measure, from the head to the base of the tail, between 225 and 370 mm (9 and 15 in). The black-capped squirrel monkey is primarily tree-dwelling and is found in both native and plantation forests as well as some farmed areas near running water. Its diet is omnivorous and mostly consists of flowers, fruit, leaves, nuts, seeds, insects, arachnids, eggs and small vertebrates. It mostly lives in female-dominated troops of around 40 to 75 monkeys, with males having been observed to disperse to live in all-male troops after reaching sexual maturation. Its current conservation status according to the International Union for Conservation of Nature (IUCN) is 'Least Concern'. The species belongs to the genus Saimiri and has two subspecies, S. b. boliviensis (the Bolivian squirrel monkey) and S. b. peruviensis (the Peruvian squirrel monkey).
From the Wikipedia article “Black-capped squirrel monkey” (en.wikipedia.org/w/index.php?title=Black-capped_squirrel_monkey&oldid=1360620016), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.
Is the black-capped squirrel monkey endangered?
The black-capped squirrel monkey is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.
- LCLeast Concern
- NTNear Threatened
- VUVulnerable
- ENEndangered
- CRCritically Endangered
- EWExtinct in the Wild
- EXExtinct
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species.
How is the black-capped squirrel monkey classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderPrimates
- familyCebidae
- genusSaimiri
- SpeciesSaimiri boliviensis (I. Geoffroy Saint-Hilaire & de Blainville, 1834)
Synonyms Callithrix boliviensis
Other names and names in other languages (33)
- Black-headed squirrel monkeyEnglish
- Bolivian squirrel monkeyEnglish
- Bolivian squirrel monkeyEnglish
- Bolivian/peruvian squirrel monkeyEnglish
- Peruvian squirrel monkeyEnglish
- سعدان سنجابي ذو القبعة السوداءArabic
- kotul amazonskýCzech
- DødningehovedabeDanish
- Schwarzkappen-TotenkopfaffeGerman
- Bolivianischer TotenkopfaffeGerman
- Μαυροκέφαλος ΣκιουροπίθηκοςGreek
- ChichiloSpanish
- FrailecitoSpanish
- Mono ardillaSpanish
- Mono ardilla de BoliviaSpanish
- boliviansaimiriFinnish
- Saimiri de BolivieFrench
- Saïmiri de BolivieFrench
- Sapajou à tête noireFrench
- Singe-écureuil de BolivieFrench
- bolíviai mókusmajomHungarian
- Saimiri bolivianoItalian
- Saimiri della BoliviaItalian
- ボリビアリスザルJapanese
- BoliviaekornapeNorwegian Bokmål
- Boliviaans DoodshoofdaapjeDutch
- sajmiri czarnołbistaPolish
- Macaco-de-cheiroPortuguese
- Macaco-de-cheiro-de-cabeça-pretaPortuguese
- Macaco-esquilo-BolivianoPortuguese
- Боливийский саймириRussian
- Kara kepli sincap maymunuTurkish
- 亞馬遜松鼠猴Chinese
Relatives of the black-capped squirrel monkey
Other species in the same genus Saimiri.
Guianan squirrel monkey
Saimiri sciureus
Central American squirrel monkey
Saimiri oerstedii
Bare-eared squirrel monkey
Saimiri ustus
Black squirrel monkey
Saimiri vanzolinii
Humboldt's squirrel monkey
Saimiri cassiquiarensis
Collins' squirrel monkey
Saimiri collinsi
CompareBlack-capped squirrel monkey vs Guianan squirrel monkeyBlack-capped squirrel monkey vs Central American squirrel monkeyBlack-capped squirrel monkey vs Bare-eared squirrel monkeyBlack-capped squirrel monkey vs Black squirrel monkey
Common questions
Answered only where our data holds the answer.
How big is the black-capped squirrel monkey?
An adult black-capped squirrel monkey weighs 615 g – 799.7 g, according to values recorded on Wikidata.
Is the black-capped squirrel monkey endangered?
The black-capped squirrel monkey is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.
How long does the black-capped squirrel monkey live?
The black-capped squirrel monkey has a recorded lifespan of 19 years – 28.6 years.
How long is the black-capped squirrel monkey pregnant?
The recorded gestation period is 163 days.
What kind of animal is the black-capped squirrel monkey?
The black-capped squirrel monkey (Saimiri boliviensis) belongs to the family Cebidae in the order Primates.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - Wikimedia Commons · per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed) · 2026-11-11
Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence). - EltonTraits 1.0: species-level foraging attributes of the world's birds and mammals · CC0 1.0 · 1.0
Wilman, H., Belmaker, J., Simpson, J., de la Rosa, C., Rivadeneira, M.M. & Jetz, W. (2014) EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95: 2027. https://doi.org/10.1890/13-1917.1. Data: https://doi.org/10.6084/m9.figshare.3559887.v1 - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Black-capped squirrel monkey (Saimiri boliviensis). Retrieved from https://creaturedata.com/animals/black-capped-squirrel-monkey
“Black-capped squirrel monkey (Saimiri boliviensis).” CreatureData, 2026, https://creaturedata.com/animals/black-capped-squirrel-monkey.
@misc{black_capped_squirrel_monkey_2026,
title = {Black-capped squirrel monkey (Saimiri boliviensis)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/black-capped-squirrel-monkey},
note = {Data as of 2026-11-11}
}