Laysan Duck vs Wall Screw-moss

Anas laysanensis compared with Tortula muralis

Key Differences

Laysan Duck is Critically Endangered while Wall Screw-moss is Least Concern.

Taxonomic Classification

Rank	Laysan Duck	Wall Screw-moss
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Bryophyta
Class	Aves (Birds)	Bryopsida (Bryopsida)
Order	Anseriformes (Anseriformes)	Pottiales (Pottiales)
Family	Anatidae	Pottiaceae
Genus	Anas	Tortula
Species	Anas laysanensis	Tortula muralis

Conservation Status

Laysan Duck

CR — Critically Endangered

Wall Screw-moss

LC — Least Concern

Physical Characteristics

Attribute	Laysan Duck	Wall Screw-moss
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.

Wall Screw-moss

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Brazil, Chile).

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.