Arctic Sulfur vs Bare-legged Swiftlet

Colias palaeno compared with Aerodramus nuditarsus

Taxonomic Classification

Rank	Arctic Sulfur	Bare-legged Swiftlet
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Lepidoptera (Butterflies & Moths)	Apodiformes (Apodiformes)
Family	Pieridae	Apodidae
Genus	Colias	Aerodramus
Species	Colias palaeno	Aerodramus nuditarsus

Evolutionary Relationship

Arctic Sulfur and Bare-legged Swiftlet share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Arctic Sulfur

LC — Least Concern

Bare-legged Swiftlet

LC — Least Concern

Physical Characteristics

Attribute	Arctic Sulfur	Bare-legged Swiftlet
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic Sulfur

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (24 countries).

Bare-legged Swiftlet

Habitat

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

Range

Found in Norway.

Arctic Sulfur

Arctic Sulfur (Colias palaeno) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

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