Gray-bellied Night Monkey vs Rufous-vented Chachalaca

Aotus lemurinus compared with Ortalis ruficauda

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Rufous-vented Chachalaca is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Rufous-vented Chachalaca
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Galliformes (Galliformes)
Family	Aotidae	Cracidae
Genus	Aotus	Ortalis
Species	Aotus lemurinus	Ortalis ruficauda

Evolutionary Relationship

Gray-bellied Night Monkey and Rufous-vented Chachalaca share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Rufous-vented Chachalaca

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Rufous-vented Chachalaca
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray-bellied Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Rufous-vented Chachalaca

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Norway, and Venezuela.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela