Dusky arion vs Northern Birch Mouse

Arion subfuscus compared with Sicista betulina

Key Differences

• Dusky arion is Data Deficient while Northern Birch Mouse is Least Concern.

Taxonomic Classification

Rank	Dusky arion	Northern Birch Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Stylommatophora (Stylommatophora)	Rodentia (Rodents)
Family	Arionidae	Dipodidae
Genus	Arion	Sicista
Species	Arion subfuscus	Sicista betulina

Evolutionary Relationship

Dusky arion and Northern Birch Mouse share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Dusky arion

DD — Data Deficient

Northern Birch Mouse

LC — Least Concern

Physical Characteristics

Attribute	Dusky arion	Northern Birch Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dusky arion

Habitat

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

Range

Found across Europe (5 countries) and North America (United States).

Northern Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Denmark, Norway, Russia, Sweden, and Ukraine.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden