Arctic barrel-bubble vs Laysan Duck

Retusa obtusa compared with Anas laysanensis

Key Differences

Arctic barrel-bubble is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Arctic barrel-bubble	Laysan Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Aves (Birds)
Order	Cephalaspidea (Cephalaspidea)	Anseriformes (Anseriformes)
Family	Retusidae	Anatidae
Genus	Retusa	Anas
Species	Retusa obtusa	Anas laysanensis

Evolutionary Relationship

Arctic barrel-bubble and Laysan Duck share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Arctic barrel-bubble

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Arctic barrel-bubble	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic barrel-bubble

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Arctic barrel-bubble

The Arctic barrel-bubble (Retusa obtusa) is a species in the genus Retusa. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.