Atiu Swiftlet vs Bladder Fern

Aerodramus sawtelli compared with Cystopteris fragilis

Key Differences

• Atiu Swiftlet is Vulnerable while Bladder Fern is Not Evaluated.

Taxonomic Classification

Rank	Atiu Swiftlet	Bladder Fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Aves (Birds)	Polypodiopsida (Polypodiopsida)
Order	Apodiformes (Apodiformes)	Polypodiales (Polypodiales)
Family	Apodidae	Cystopteridaceae
Genus	Aerodramus	Cystopteris
Species	Aerodramus sawtelli	Cystopteris fragilis

Conservation Status

Atiu Swiftlet

VU — Vulnerable

Bladder Fern

NE — Not Evaluated

Physical Characteristics

Attribute	Atiu Swiftlet	Bladder Fern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atiu Swiftlet

Habitat

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

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Bladder Fern

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (Canada, United States), and South America (Colombia).

Atiu Swiftlet

The Atiu Swiftlet (Aerodramus sawtelli) is a species in the genus Aerodramus. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Bladder Fern

The Bladder Fern (Cystopteris fragilis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway