Gray-bellied Night Monkey vs Olive-headed Weaver

Aotus lemurinus compared with Ploceus olivaceiceps

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Olive-headed Weaver is Near Threatened.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Olive-headed Weaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Passeriformes (Songbirds)
Family	Aotidae	Ploceidae
Genus	Aotus	Ploceus
Species	Aotus lemurinus	Ploceus olivaceiceps

Evolutionary Relationship

Gray-bellied Night Monkey and Olive-headed Weaver share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Olive-headed Weaver

NT — Near Threatened

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Olive-headed Weaver
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.

Olive-headed Weaver

Habitat

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

Range

Found in Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.