Northern Birch Mouse vs undulate ray

Sicista betulina compared with Raja undulata

Key Differences

• Northern Birch Mouse is Least Concern while undulate ray is Endangered.

Taxonomic Classification

Rank	Northern Birch Mouse	undulate 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	Raja
Species	Sicista betulina	Raja undulata

Evolutionary Relationship

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

Conservation Status

Northern Birch Mouse

LC — Least Concern

undulate ray

EN — Endangered

Physical Characteristics

Attribute	Northern Birch Mouse	undulate 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.

undulate ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found in Belgium. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.