Northern Birch Mouse vs Round Ray

Sicista betulina compared with Rajella fyllae

Key Differences

• Northern Birch Mouse is Least Concern while Round Ray is Not Evaluated.

Taxonomic Classification

Rank	Northern Birch Mouse	Round Ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Rajiformes (Rajiformes)
Family	Dipodidae	Rajidae
Genus	Sicista	Rajella
Species	Sicista betulina	Rajella fyllae

Evolutionary Relationship

Northern Birch Mouse and Round Ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Northern Birch Mouse

LC — Least Concern

Round Ray

NE — Not Evaluated

Physical Characteristics

Attribute	Northern Birch Mouse	Round Ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Northern Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Round Ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden