Atiu Swiftlet vs Big Brown Bat

Aerodramus sawtelli compared with Eptesicus fuscus

Key Differences

• Atiu Swiftlet is Vulnerable while Big Brown Bat is Least Concern.

Taxonomic Classification

Rank	Atiu Swiftlet	Big Brown Bat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Apodiformes (Apodiformes)	Chiroptera (Bats)
Family	Apodidae	Vespertilionidae
Genus	Aerodramus	Eptesicus
Species	Aerodramus sawtelli	Eptesicus fuscus

Evolutionary Relationship

Atiu Swiftlet and Big Brown Bat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Atiu Swiftlet

VU — Vulnerable

Big Brown Bat

LC — Least Concern

Physical Characteristics

Attribute	Atiu Swiftlet	Big Brown Bat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atiu Swiftlet

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.

Big Brown Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Colombia, Ecuador, United States, and Venezuela.

Atiu Swiftlet

The Atiu Swiftlet (Aerodramus sawtelli) is a species in the genus Aerodramus. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Big Brown Bat

The Big Brown Bat (Eptesicus fuscus) is a species in the genus Eptesicus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.