Caucasian Birch Mouse vs Ring-necked Duck

Sicista caucasica compared with Aythya collaris

Key Differences

• Caucasian Birch Mouse is Near Threatened while Ring-necked Duck is Least Concern.

Taxonomic Classification

Rank	Caucasian Birch Mouse	Ring-necked Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Anseriformes (Anseriformes)
Family	Dipodidae	Anatidae
Genus	Sicista	Aythya
Species	Sicista caucasica	Aythya collaris

Evolutionary Relationship

Caucasian Birch Mouse and Ring-necked Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Caucasian Birch Mouse

NT — Near Threatened

Ring-necked Duck

LC — Least Concern

Physical Characteristics

Attribute	Caucasian Birch Mouse	Ring-necked Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Caucasian Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Ring-necked Duck

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Caucasian Birch Mouse

The Caucasian Birch Mouse (Sicista caucasica) is a species in the genus Sicista. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Ring-necked Duck

Ring-necked Duck (Aythya collaris) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.