Bare-legged Swiftlet vs Bearded Tooth

Aerodramus nuditarsus compared with Hericium erinaceus

Key Differences

Bare-legged Swiftlet is Least Concern while Bearded Tooth is Critically Endangered.

Taxonomic Classification

Rank	Bare-legged Swiftlet	Bearded Tooth
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Aves (Birds)	Agaricomycetes (Mushrooms)
Order	Apodiformes (Apodiformes)	Russulales (Russulales)
Family	Apodidae	Hericiaceae
Genus	Aerodramus	Hericium
Species	Aerodramus nuditarsus	Hericium erinaceus

Conservation Status

Bare-legged Swiftlet

LC — Least Concern

Bearded Tooth

CR — Critically Endangered

Physical Characteristics

Attribute	Bare-legged Swiftlet	Bearded Tooth
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bare-legged Swiftlet

Habitat

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

Range

Found in Norway.

Bearded Tooth

Habitat

Inhabits tropical and subtropical moist broadleaf forests and temperate broadleaf and mixed forests spanning the Indomalayan and Palearctic realms.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (United States). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Bearded Tooth

The Bearded Tooth (Hericium erinaceus) is a species in the genus Hericium. It is currently classified as Critically Endangered on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests and temperate broadleaf and mixed forests spanning the Indomalayan and Palearctic realms.