Harmless Serotine vs River Tern

Eptesicus innoxius compared with Sterna aurantia

Key Differences

• Harmless Serotine is Near Threatened while River Tern is Vulnerable.

Taxonomic Classification

Rank	Harmless Serotine	River Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Chiroptera (Bats)	Charadriiformes (Charadriiformes)
Family	Vespertilionidae	Laridae
Genus	Eptesicus	Sterna
Species	Eptesicus innoxius	Sterna aurantia

Evolutionary Relationship

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

Conservation Status

Harmless Serotine

NT — Near Threatened

River Tern

VU — Vulnerable

Physical Characteristics

Attribute	Harmless Serotine	River Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Harmless Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

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.