Bare-legged Swiftlet vs Northern, Pribilof, or Alaska fur seal

Aerodramus nuditarsus compared with Callorhinus ursinus

Key Differences

• Bare-legged Swiftlet is Least Concern while Northern, Pribilof, or Alaska fur seal is Vulnerable.

Taxonomic Classification

Rank	Bare-legged Swiftlet	Northern, Pribilof, or Alaska fur seal
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Apodiformes (Apodiformes)	Carnivora (Carnivorans)
Family	Apodidae	Otariidae
Genus	Aerodramus	Callorhinus
Species	Aerodramus nuditarsus	Callorhinus ursinus

Evolutionary Relationship

Bare-legged Swiftlet and Northern, Pribilof, or Alaska fur seal share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bare-legged Swiftlet

LC — Least Concern

Northern, Pribilof, or Alaska fur seal

VU — Vulnerable

Physical Characteristics

Attribute	Bare-legged Swiftlet	Northern, Pribilof, or Alaska fur seal
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.

Northern, Pribilof, or Alaska fur seal

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Russia and Ukraine. Currently classified as Vulnerable 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.