Colombian Oldfield Mouse vs 赤嘴鴨

Thomasomys dispar compared with Anas erythrorhyncha

Key Differences

• Colombian Oldfield Mouse is Data Deficient while 赤嘴鴨 is Least Concern.

Taxonomic Classification

Rank	Colombian Oldfield Mouse	赤嘴鴨
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Aves (鳥綱)
Order	Rodentia (啮齿目)	Anseriformes (雁形目)
Family	Cricetidae	Anatidae
Genus	Thomasomys	Anas
Species	Thomasomys dispar	Anas erythrorhyncha

Evolutionary Relationship

Colombian Oldfield Mouse and 赤嘴鴨 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Colombian Oldfield Mouse

DD — Data Deficient

赤嘴鴨

LC — Least Concern

Physical Characteristics

Attribute	Colombian Oldfield Mouse	赤嘴鴨
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colombian Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

赤嘴鴨

Habitat

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

Range

Found across Europe (6 countries) and South America (Ecuador).

Colombian Oldfield Mouse

<em>Thomasomys dispar</em>, commonly known as the Colombian Oldfield Mouse, is a small rodent species belonging to the genus <em>Thomasomys</em> within the family Cricetidae. This species is classified as Data Deficient, indicating that insufficient information is currently available to evaluate its conservation status with confidence. It has been documented in Colombia, where it inhabits diverse terrestrial and aquatic-adjacent environments. Members of the genus <em>Thomasomys</em> are typically associated with high-altitude Andean habitats, including páramo grasslands, shrublands, and montane forest edges, where they occupy ground-level microhabitats and burrow in soft soils. These mice are generally omnivorous, consuming seeds, plant material, and invertebrates, though specific dietary data for <em>Thomasomys dispar</em> have not been recorded. Biological traits of this species remain poorly documented in the scientific literature. The Data Deficient classification highlights the need for targeted surveys in Colombian Andean regions to determine population size, distribution, and the ecological requirements of this poorly known rodent.

赤嘴鴨

红嘴鸭（Anas erythrorhyncha）在IUCN红色名录中被列为无危（LC）。在其分布范围内种群广泛且数量丰富，种群稳定，无直接保护忧虑。