Lesser Short-tailed Rat vs Ring-necked Duck

Brachyuromys betsileoensis compared with Aythya collaris

Taxonomic Classification

Rank	Lesser Short-tailed Rat	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	Nesomyidae	Anatidae
Genus	Brachyuromys	Aythya
Species	Brachyuromys betsileoensis	Aythya collaris

Evolutionary Relationship

Lesser Short-tailed Rat and Ring-necked Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Lesser Short-tailed Rat

LC — Least Concern

Ring-necked Duck

LC — Least Concern

Physical Characteristics

Attribute	Lesser Short-tailed Rat	Ring-necked Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Short-tailed Rat

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).

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.