Black-shouldered Opossum vs River Tern

Caluromysiops irrupta compared with Sterna aurantia

Key Differences

• Black-shouldered Opossum is Least Concern while River Tern is Vulnerable.

Taxonomic Classification

Rank	Black-shouldered Opossum	River Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Didelphimorphia (Didelphimorphia)	Charadriiformes (Charadriiformes)
Family	Didelphidae	Laridae
Genus	Caluromysiops	Sterna
Species	Caluromysiops irrupta	Sterna aurantia

Evolutionary Relationship

Black-shouldered Opossum and River Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-shouldered Opossum

LC — Least Concern

River Tern

VU — Vulnerable

Physical Characteristics

Attribute	Black-shouldered Opossum	River Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-shouldered Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

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.

Black-shouldered Opossum

The Black-shouldered Opossum (Caluromysiops irrupta) is a species in the genus Caluromysiops. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.