Black-headed Night Monkey vs Foothill Elaenia

Aotus nigriceps compared with Myiopagis olallai

Key Differences

• Black-headed Night Monkey is Least Concern while Foothill Elaenia is Vulnerable.

Taxonomic Classification

Rank	Black-headed Night Monkey	Foothill Elaenia
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Passeriformes (Songbirds)
Family	Aotidae	Tyrannidae
Genus	Aotus	Myiopagis
Species	Aotus nigriceps	Myiopagis olallai

Evolutionary Relationship

Black-headed Night Monkey and Foothill Elaenia share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-headed Night Monkey

LC — Least Concern

Foothill Elaenia

VU — Vulnerable

Physical Characteristics

Attribute	Black-headed Night Monkey	Foothill Elaenia
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-headed Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Foothill Elaenia

Habitat

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

Range

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

Black-headed Night Monkey

The Black-headed Night Monkey (Aotus nigriceps) is a species in the genus Aotus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.