Ecuadorian Squirrel Monkey

Ecuadorian Squirrel Monkey

Saimiri macrodon

Silhouette: PhyloPic · PhyloPic

Daily sighting probability ~60% · Likely
at Cuyabeno Wildlife Reserve
331 Verified sightings at Cuyabeno Wildlife Reserve From 2019 to 2026
575 Verified sightings across all 4 parks From 2019 to 2026
April Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Ecuadorian Squirrel Monkey

The Ecuadorian squirrel monkey (Saimiri cassiquiarensis macrodon) is a type of squirrel monkey. It had been considered a subspecies of the Guianan squirrel monkey, Saimiri sciureus, but was elevated to a full species, S. macrodon, based on a 2009 study by Carretero-Pinzón, et al. Based on subsequent genetic research by Jessica Lynch Alfaro, et al it was again reclassified as a subspecies of Humboldt's squirrel monkey.

The Ecuadorian squirrel monkey lives in the western Brazilian Amazon, as well as southern Colombia, eastern Ecuador and northern and eastern Peru. It lives in humid tropical and subtropical forest, preferring dense forest but able to live in secondary forest and disturbed forest as well. It can live at elevations up to 1,200 m (3,900 ft), but where it has been studied in Ecuador it prefers elevations under 500 m (1,600 ft).

The Ecuadorian squirrel monkey has a head and body length of between 25 and 32 cm (9.8 and 12.6 in) with a tail length between 34 and 44 cm (13 and 17 in). Males weigh between 885 and 1,380 g (31.2 and 48.7 oz) and females weigh between 590 and 1,150 g (21 and 41 oz). Its coloration is similar to that of the Guianan squirrel monkey but its fur is darker. Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Cuyabeno Wildlife Reserve 🇪🇨 Ecuador
~60%
2 Yasuní National Park 🇪🇨 Ecuador
~60%
3 Amacayacu National Natural Park 🇨🇴 Colombia
~50%
4 Sierra de la Macarena National Park 🇨🇴 Colombia
Insufficient data

Quick answers

What are the chances of seeing a Ecuadorian Squirrel Monkey in Cuyabeno Wildlife Reserve?

About 60% of wildlife watchers report a Ecuadorian Squirrel Monkey sighting in Cuyabeno Wildlife Reserve, based on 331 verified sightings from GBIF citizen-science data.

When is the best time to see Ecuadorian Squirrel Monkey in Cuyabeno Wildlife Reserve?

April has the highest sighting rate for Ecuadorian Squirrel Monkey in Cuyabeno Wildlife Reserve in our monthly data.

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