bare-eared squirrel monkey vs Long-tailed Sylph

Saimiri ustus compared with Aglaiocercus kingii

Key Differences

• bare-eared squirrel monkey is Near Threatened while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	bare-eared squirrel monkey	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Apodiformes (Apodiformes)
Family	Cebidae	Trochilidae
Genus	Saimiri	Aglaiocercus
Species	Saimiri ustus	Aglaiocercus kingii

Evolutionary Relationship

bare-eared squirrel monkey and Long-tailed Sylph share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

bare-eared squirrel monkey

NT — Near Threatened

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	bare-eared squirrel monkey	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

bare-eared squirrel monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

bare-eared squirrel monkey

The Bare-eared squirrel monkey (Saimiri ustus) is a species in the genus Saimiri. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Long-tailed Sylph

One of the most strikingly ornamented hummingbirds, male long-tailed sylphs have iridescent green plumage and dramatically elongated, ribbon-like outer tail feathers reaching up to 22 cm — over three times the body length. Found in Andean cloud forests of Colombia and Venezuela, they inhabit humid montane forest between 1,400–2,800 meters elevation. Males perform elaborate display flights to attract females. Their extravagant tails are a classic example of sexual selection via female preference.