Australian Swiftlet vs

Aerodramus terraereginae compared with Bacidia rosella

Key Differences

Australian Swiftlet is Least Concern while is Critically Endangered.

Taxonomic Classification

Rank	Australian Swiftlet
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Ascomycota (Sac Fungi)
Class	Aves (Birds)	Lecanoromycetes (Lecanoromycetes)
Order	Apodiformes (Apodiformes)	Lecanorales (Lecanorales)
Family	Apodidae	Ramalinaceae
Genus	Aerodramus	Bacidia
Species	Aerodramus terraereginae	Bacidia rosella

Conservation Status

Australian Swiftlet

LC — Least Concern

CR — Critically Endangered

Physical Characteristics

Attribute	Australian Swiftlet
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Australian Swiftlet

Habitat

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

Range

Found in Norway.

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 5 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Australian Swiftlet

The Australian Swiftlet (Aerodramus terraereginae) 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.

Bacidia rosella is a crustose lichen in the family Ramalinaceae, assessed as Critically Endangered (CR). It grows on the smooth bark of ancient trees in old-growth woodland habitats with long ecological continuity. Its critically endangered status reflects extreme rarity and the near-total loss of suitable veteran tree habitats across its range.