Gray Birch Mouse vs Lesser Scaup

Sicista pseudonapaea compared with Aythya affinis

Key Differences

• Gray Birch Mouse is Data Deficient while Lesser Scaup is Least Concern.

Taxonomic Classification

Rank	Gray Birch Mouse	Lesser Scaup
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 pseudonapaea	Aythya affinis

Evolutionary Relationship

Gray Birch Mouse and Lesser Scaup share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray Birch Mouse

DD — Data Deficient

Lesser Scaup

LC — Least Concern

Physical Characteristics

Attribute	Gray Birch Mouse	Lesser Scaup
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Lesser Scaup

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Lesser Scaup

Lesser Scaup (Aythya affinis) 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.