Humboldt’s Squirrel Monkey
Humboldt’s Squirrel MonkeyHumboldt’s Squirrel MonkeyHumboldt’s Squirrel MonkeyHumboldt’s Squirrel Monkey

Humboldt’s Squirrel Monkey

Saimiri cassiquiarensis

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Anavilhanas National Park
14 Verified records at Anavilhanas National Park
March Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

Humboldt's squirrel monkey (Saimiri cassiquiarensis) is a species of squirrel monkey from Brazil, Colombia, Ecuador, Peru and Venezuela. It had previously been considered a subspecies of the common squirrel monkey, S. sciureus, but was elevated to full species status based on a genetic study by Carretero-Pinzón in 2009. A genetic study by Jessica Lynch Alfaro, et al indicated that the Ecuadorian squirrel monkey may be synonymous with Saimiri cassiquiarensis. As of 2018, the Ecuadorian squirrel monkey is generally regarded as a subspecies of Humboldt's squirrel monkey, S. cassiquiarensis macrodon. Humboldt's squirrel monkey have a head and body length of between 25 and 37 cm (9.8 and 14.6 in) with a tail between 36 and 45 cm (14 and 18 in). Its coloration is similar to that of the Guianan squirrel monkey but the fur on the base of the crown is golden yellow as compared with gray for the Guianan squirrel monkey. Wikipedia →

20–30% of wildlife watchers report a Humboldt’s Squirrel Monkey sighting in Anavilhanas National Park, based on 14 days of visitor records from GBIF citizen-science data.

Closest Relatives at Anavilhanas National Park

Common Squirrel Monkey
LC

Common Squirrel Monkey

☀️ Diurnal Mammal

Saimiri sciureus

20–30% · Possible
Brown Capuchin
Endemic

Brown Capuchin

☀️ Diurnal Mammal

Sapajus apella

Insufficient data
Spix's white-fronted capuchin
VU

Spix's white-fronted capuchin

Mammal

Cebus unicolor

Insufficient data
Noisy Night Monkey
LC

Noisy Night Monkey

☀️ Diurnal Mammal

Aotus vociferans

10–20% · With luck
Colombian Red Howler Monkey
LC

Colombian Red Howler Monkey

☀️ Diurnal Mammal

Alouatta seniculus

Insufficient data
Guiana Spider Monkey
VU

Guiana Spider Monkey

☀️ Diurnal Mammal

Ateles paniscus

Insufficient data
Golden-handed Tamarin
LC

Golden-handed Tamarin

☀️ Diurnal Mammal

Saguinus midas

Insufficient data

📅 Monthly Probability

20–30
Jan
20–30
Feb
40–50
Mar
20–30
Apr
30–40
May
<5
Jun
10–20
Jul
10–20
Aug
20–30
Sep
<5
Oct
30–40
Nov
20–30
Dec

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙12am6am12pm6pm12am

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 Sierra de la Macarena National Park 🇨🇴 Colombia
30–40%
2 Anavilhanas National Park 🇧🇷 Brazil
20–30%
3 Chingaza National Natural Park 🇨🇴 Colombia
Insufficient data
4 Cuyabeno Wildlife Reserve 🇪🇨 Ecuador
Insufficient data

Quick answers

What are the chances of seeing a Humboldt’s Squirrel Monkey in Anavilhanas National Park?

About 23% of wildlife watchers report a Humboldt’s Squirrel Monkey sighting in Anavilhanas National Park, based on 14 days of visitor records from GBIF citizen-science data.

When is the best time to see Humboldt’s Squirrel Monkey in Anavilhanas National Park?

March has the highest sighting rate for Humboldt’s Squirrel Monkey in Anavilhanas National Park in our monthly data.

← Back to Anavilhanas National Park