Keeled slug vs Laysan Duck

Tandonia kusceri compared with Anas laysanensis

Key Differences

• Keeled slug is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Keeled slug	Laysan Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Aves (Birds)
Order	Stylommatophora (Stylommatophora)	Anseriformes (Anseriformes)
Family	Milacidae	Anatidae
Genus	Tandonia	Anas
Species	Tandonia kusceri	Anas laysanensis

Evolutionary Relationship

Keeled slug and Laysan Duck share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Keeled slug

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Keeled slug	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Keeled slug

Habitat

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

Range

Distributed across Greece, Moldova, Ukraine, and 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.