McDiarmid Thorius vs Northern Birch Mouse

Thorius munificus compared with Sicista betulina

Key Differences

• McDiarmid Thorius is Critically Endangered while Northern Birch Mouse is Least Concern.

Taxonomic Classification

Rank	McDiarmid Thorius	Northern Birch Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Mammalia (Mammals)
Order	Caudata (Caudata)	Rodentia (Rodents)
Family	Plethodontidae	Dipodidae
Genus	Thorius	Sicista
Species	Thorius munificus	Sicista betulina

Evolutionary Relationship

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

Conservation Status

McDiarmid Thorius

CR — Critically Endangered

Northern Birch Mouse

LC — Least Concern

Physical Characteristics

Attribute	McDiarmid Thorius	Northern Birch Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

McDiarmid Thorius

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico. 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.