Gray-bellied Night Monkey vs Yellow-billed Cacique

Aotus lemurinus compared with Amblycercus holosericeus

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Yellow-billed Cacique is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Yellow-billed Cacique
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class	Mammalia (memeliler)	Aves (kuş)
Order	Primates (Primat)	Passeriformes (Ötücü kuşlar)
Family	Aotidae	Icteridae
Genus	Aotus	Amblycercus
Species	Aotus lemurinus	Amblycercus holosericeus

Evolutionary Relationship

Gray-bellied Night Monkey and Yellow-billed Cacique share a common ancestor at the Phylum level: Chordata. (Kordalılar)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Yellow-billed Cacique

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Yellow-billed Cacique
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.

Yellow-billed Cacique

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Yellow-billed Cacique

Yellow-billed Cacique (Amblycercus holosericeus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇻🇪 Venezuela