Lesser Noctule vs Northern Birch Mouse

Nyctalus leisleri compared with Sicista betulina

Key Differences

• Lesser Noctule is Endangered while Northern Birch Mouse is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Northern Birch Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Chiroptera (Bats)	Rodentia (Rodents)
Family	Vespertilionidae	Dipodidae
Genus	Nyctalus	Sicista
Species	Nyctalus leisleri	Sicista betulina

Evolutionary Relationship

Lesser Noctule and Northern Birch Mouse share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Lesser Noctule

EN — Endangered

Northern Birch Mouse

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Northern Birch Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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 3 countries:

🇩🇰 Denmark 🇸🇪 Sweden 🇺🇦 Ukraine