Laysan Duck vs Oak Crust

Anas laysanensis compared with Peniophora quercina

Key Differences

Laysan Duck is Critically Endangered while Oak Crust is Least Concern.

Taxonomic Classification

Rank	Laysan Duck	Oak Crust
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Aves (Birds)	Agaricomycetes (Mushrooms)
Order	Anseriformes (Anseriformes)	Russulales (Russulales)
Family	Anatidae	Peniophoraceae
Genus	Anas	Peniophora
Species	Anas laysanensis	Peniophora quercina

Conservation Status

Laysan Duck

CR — Critically Endangered

Oak Crust

LC — Least Concern

Physical Characteristics

Attribute	Laysan Duck	Oak Crust
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.

Oak Crust

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.