Atiu Swiftlet vs

Aerodramus sawtelli compared with Clitocybe barbularum

Key Differences

Atiu Swiftlet is Vulnerable while is Data Deficient.

Taxonomic Classification

Rank	Atiu Swiftlet
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Aves (Birds)	Agaricomycetes (Mushrooms)
Order	Apodiformes (Apodiformes)	Agaricales (Gilled Mushrooms)
Family	Apodidae	Tricholomataceae
Genus	Aerodramus	Clitocybe
Species	Aerodramus sawtelli	Clitocybe barbularum

Conservation Status

Atiu Swiftlet

VU — Vulnerable

DD — Data Deficient

Physical Characteristics

Attribute	Atiu Swiftlet
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.

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Clitocybe barbularum is a small agaric fungus in the family Tricholomataceae occurring in Northern European temperate and boreal habitats, primarily documented from Scandinavian countries. It grows in grassy areas, woodland clearings, forest margins, and occasionally on disturbed ground, fruiting in late summer through autumn. The fruiting bodies are relatively small and inconspicuous with the characteristic Clitocybe form: a depressed to shallowly funnel-shaped cap, often whitish to pale greyish or buff, with crowded, decurrent gills and a slender stipe. The specific epithet barbularum suggests an association with particular microhabitats or substrates. As a saprotrophic fungus, C. barbularum plays a role in decomposing plant litter and returning nutrients to the soil ecosystem. The broader Clitocybe genus contains both edible and mildly toxic species, and smaller pale species are approached cautiously by foragers. This species reflects the high diversity of macrofungi in Scandinavian landscapes, where boreal and mixed forest systems support exceptional fungal biodiversity.