Bare-legged Swiftlet vs Triangle-marked Roller

Aerodramus nuditarsus compared with Ancylis achatana

Key Differences

• Bare-legged Swiftlet is Least Concern while Triangle-marked Roller is Vulnerable.

Taxonomic Classification

Rank	Bare-legged Swiftlet	Triangle-marked Roller
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Apodiformes (Apodiformes)	Lepidoptera (Butterflies & Moths)
Family	Apodidae	Tortricidae
Genus	Aerodramus	Ancylis
Species	Aerodramus nuditarsus	Ancylis achatana

Evolutionary Relationship

Bare-legged Swiftlet and Triangle-marked Roller share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bare-legged Swiftlet

LC — Least Concern

Triangle-marked Roller

VU — Vulnerable

Physical Characteristics

Attribute	Bare-legged Swiftlet	Triangle-marked Roller
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.

Triangle-marked Roller

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. 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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway