Greater Eastern Peaclam vs Laysan Duck

Pisidium dubium compared with Anas laysanensis

Key Differences

• Greater Eastern Peaclam is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Greater Eastern Peaclam	Laysan Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Aves (Birds)
Order	Sphaeriida (Sphaeriida)	Anseriformes (Anseriformes)
Family	Sphaeriidae	Anatidae
Genus	Pisidium	Anas
Species	Pisidium dubium	Anas laysanensis

Evolutionary Relationship

Greater Eastern Peaclam and Laysan Duck share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Greater Eastern Peaclam

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Greater Eastern Peaclam	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Greater Eastern Peaclam

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States.

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.

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.