Andean Chilomys vs River Tern

Chilomys instans compared with Sterna aurantia

Key Differences

• Andean Chilomys is Least Concern while River Tern is Vulnerable.

Taxonomic Classification

Rank	Andean Chilomys	River Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Charadriiformes (Charadriiformes)
Family	Cricetidae	Laridae
Genus	Chilomys	Sterna
Species	Chilomys instans	Sterna aurantia

Evolutionary Relationship

Andean Chilomys and River Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Andean Chilomys

LC — Least Concern

River Tern

VU — Vulnerable

Physical Characteristics

Attribute	Andean Chilomys	River Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Andean Chilomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

River Tern

Habitat

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

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Andean Chilomys

The Andean Chilomys (Chilomys instans) is a species in the genus Chilomys. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.