Bare-legged Swiftlet vs Lesser Noctule

Aerodramus nuditarsus compared with Nyctalus leisleri

Key Differences

• Bare-legged Swiftlet is Least Concern while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Bare-legged Swiftlet	Lesser Noctule
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	Nyctalus
Species	Aerodramus nuditarsus	Nyctalus leisleri

Evolutionary Relationship

Bare-legged Swiftlet and Lesser Noctule share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bare-legged Swiftlet

LC — Least Concern

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Bare-legged Swiftlet	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bare-legged Swiftlet

Habitat

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

Range

Found in Norway.

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Bare-legged Swiftlet

The Bare-legged Swiftlet (Aerodramus nuditarsus) is a species in the genus Aerodramus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.