Bare-legged Swiftlet vs undulate ray

Aerodramus nuditarsus compared with Raja undulata

Key Differences

• Bare-legged Swiftlet is Least Concern while undulate ray is Endangered.

Taxonomic Classification

Rank	Bare-legged Swiftlet	undulate ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Elasmobranchii
Order	Apodiformes (Apodiformes)	Rajiformes (Rajiformes)
Family	Apodidae	Rajidae
Genus	Aerodramus	Raja
Species	Aerodramus nuditarsus	Raja undulata

Evolutionary Relationship

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

Conservation Status

Bare-legged Swiftlet

LC — Least Concern

undulate ray

EN — Endangered

Physical Characteristics

Attribute	Bare-legged Swiftlet	undulate ray
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.

undulate ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found in Belgium. 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.