Laysan Duck vs Thwaites's Nut Truffle

Anas laysanensis compared with Hymenogaster thwaitesii

Key Differences

Laysan Duck is Critically Endangered while Thwaites's Nut Truffle is Not Evaluated.

Taxonomic Classification

Rank	Laysan Duck	Thwaites's Nut Truffle
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Aves (Birds)	Agaricomycetes (Mushrooms)
Order	Anseriformes (Anseriformes)	Agaricales (Gilled Mushrooms)
Family	Anatidae	Hymenogastraceae
Genus	Anas	Hymenogaster
Species	Anas laysanensis	Hymenogaster thwaitesii

Conservation Status

Laysan Duck

CR — Critically Endangered

Thwaites's Nut Truffle

NE — Not Evaluated

Physical Characteristics

Attribute	Laysan Duck	Thwaites's Nut Truffle
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.

Thwaites's Nut Truffle

Habitat

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

Range

Found in Norway.

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.