Laysan Duck vs Ridged Tooth

Anas laysanensis compared with Hydnellum scrobiculatum

Key Differences

Laysan Duck is Critically Endangered while Ridged Tooth is Data Deficient.

Taxonomic Classification

Rank	Laysan Duck	Ridged Tooth
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Aves (Birds)	Agaricomycetes (Mushrooms)
Order	Anseriformes (Anseriformes)	Thelephorales (Thelephorales)
Family	Anatidae	Bankeraceae
Genus	Anas	Hydnellum
Species	Anas laysanensis	Hydnellum scrobiculatum

Conservation Status

Laysan Duck

CR — Critically Endangered

Ridged Tooth

DD — Data Deficient

Physical Characteristics

Attribute	Laysan Duck	Ridged Tooth
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Laysan Duck

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Ridged Tooth

Habitat

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

Range

Found across Europe (5 countries) and North America (United States).

Laysan Duck

Laysan Duck (Anas laysanensis) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.