Laysan Duck vs St. James' shell

Anas laysanensis compared with Pecten maximus

Key Differences

Laysan Duck is Critically Endangered while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Laysan Duck	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Aves (Birds)	Bivalvia (Bivalvia)
Order	Anseriformes (Anseriformes)	Pectinida (Pectinida)
Family	Anatidae	Pectinidae
Genus	Anas	Pecten
Species	Anas laysanensis	Pecten maximus

Evolutionary Relationship

Laysan Duck and St. James' shell share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Laysan Duck

CR — Critically Endangered

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Laysan Duck	St. James' shell
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.

St. James' shell

Habitat

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

Range

Widely distributed across Asia (China), Europe (8 countries), and South America (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.

St. James' shell

St. James' shell (Pecten maximus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.