Laysan Duck vs

Anas laysanensis compared with Stephanoeca kentii

Key Differences

Laysan Duck is Critically Endangered while is Not Evaluated.

Taxonomic Classification

Rank	Laysan Duck
Kingdom	Animalia (Animals)	Protozoa (protozoa)
Phylum	Chordata (Chordates)	Choanozoa (Choanozoa)
Class	Aves (Birds)	Choanoflagellatea (Choanoflagellatea)
Order	Anseriformes (Anseriformes)	Choanoflagellida (Choanoflagellida)
Family	Anatidae	Acanthoecidae
Genus	Anas	Stephanoeca
Species	Anas laysanensis	Stephanoeca kentii

Conservation Status

Laysan Duck

CR — Critically Endangered

NE — Not Evaluated

Physical Characteristics

Attribute	Laysan Duck
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.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across 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.

Stephanoeca kentii is a loricate choanoflagellate, a marine unicellular organism that constructs a delicate basket-like structure (lorica) of siliceous strips surrounding its cell. It inhabits coastal and oceanic waters where it feeds on picoplankton bacteria. Choanoflagellates like this species are of scientific interest as the closest living unicellular relatives of animals.