limestone fern vs Northern Birch Mouse

Gymnocarpium robertianum compared with Sicista betulina

Key Differences

• limestone fern is Critically Endangered while Northern Birch Mouse is Least Concern.

Taxonomic Classification

Rank	limestone fern	Northern Birch Mouse
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (Chordates)
Class	Polypodiopsida (Polypodiopsida)	Mammalia (Mammals)
Order	Polypodiales (Polypodiales)	Rodentia (Rodents)
Family	Cystopteridaceae	Dipodidae
Genus	Gymnocarpium	Sicista
Species	Gymnocarpium robertianum	Sicista betulina

Conservation Status

limestone fern

CR — Critically Endangered

Northern Birch Mouse

LC — Least Concern

Physical Characteristics

Attribute	limestone fern	Northern Birch Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

limestone fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Belgium, Canada, Norway, and Sweden. Currently classified as Critically 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 2 countries:

🇳🇴 Norway 🇸🇪 Sweden