Alpine Bladder-fern vs Bare-legged Swiftlet

Cystopteris alpina compared with Aerodramus nuditarsus

Key Differences

• Alpine Bladder-fern is Near Threatened while Bare-legged Swiftlet is Least Concern.

Taxonomic Classification

Rank	Alpine Bladder-fern	Bare-legged Swiftlet
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (Chordates)
Class	Polypodiopsida (Polypodiopsida)	Aves (Birds)
Order	Polypodiales (Polypodiales)	Apodiformes (Apodiformes)
Family	Cystopteridaceae	Apodidae
Genus	Cystopteris	Aerodramus
Species	Cystopteris alpina	Aerodramus nuditarsus

Conservation Status

Alpine Bladder-fern

NT — Near Threatened

Bare-legged Swiftlet

LC — Least Concern

Physical Characteristics

Attribute	Alpine Bladder-fern	Bare-legged Swiftlet
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alpine Bladder-fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Bare-legged Swiftlet

Habitat

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

Range

Found in Norway.

Alpine Bladder-fern

The Alpine Bladder-fern (Cystopteris alpina) is a species in the genus Cystopteris. It is currently classified as Near Threatened on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies. Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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