Lesser Pencil-tailed Tree Mouse vs Lesser Scaup

Chiropodomys pusillus compared with Aythya affinis

Key Differences

• Lesser Pencil-tailed Tree Mouse is Data Deficient while Lesser Scaup is Least Concern.

Taxonomic Classification

Rank	Lesser Pencil-tailed Tree 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	Muridae (Mice & Rats)	Anatidae
Genus	Chiropodomys	Aythya
Species	Chiropodomys pusillus	Aythya affinis

Evolutionary Relationship

Lesser Pencil-tailed Tree Mouse and Lesser Scaup share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Lesser Pencil-tailed Tree Mouse

DD — Data Deficient

Lesser Scaup

LC — Least Concern

Physical Characteristics

Attribute	Lesser Pencil-tailed Tree Mouse	Lesser Scaup
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Pencil-tailed Tree 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.