Colombian Oldfield Mouse vs Empress Brilliant

Thomasomys dispar compared with Heliodoxa imperatrix

Key Differences

• Colombian Oldfield Mouse is Data Deficient while Empress Brilliant is Least Concern.

Taxonomic Classification

Rank	Colombian Oldfield Mouse	Empress Brilliant
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Apodiformes (Apodiformes)
Family	Cricetidae	Trochilidae
Genus	Thomasomys	Heliodoxa
Species	Thomasomys dispar	Heliodoxa imperatrix

Evolutionary Relationship

Colombian Oldfield Mouse and Empress Brilliant share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Colombian Oldfield Mouse

DD — Data Deficient

Empress Brilliant

LC — Least Concern

Physical Characteristics

Attribute	Colombian Oldfield Mouse	Empress Brilliant
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.

Empress Brilliant

Habitat

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

Range

Distributed across Colombia, Ecuador, and Norway.

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.

Empress Brilliant

A large, brilliantly colored hummingbird of humid Andean forests in Colombia and Ecuador, male empress brilliants are among the most striking hummingbirds with iridescent green and violet plumage and glittering scales across their throat and breast. Found at elevations between 1,000–2,100 meters in cloud forest. Named in honor of Empress Eugenie of France, these powerful birds aggressively defend territory around flowering trees. Listed as Least Concern with stable populations in remaining Andean forest.

Shared Countries

Both species can be found in 1 countries:

🇨🇴 Colombia