Central Andes Oldfield Mouse vs Crested Shelduck

Thomasomys contradictus compared with Tadorna cristata

Key Differences

• Central Andes Oldfield Mouse is Data Deficient while Crested Shelduck is Critically Endangered.

Taxonomic Classification

Rank	Central Andes Oldfield Mouse	Crested Shelduck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Anseriformes (Anseriformes)
Family	Cricetidae	Anatidae
Genus	Thomasomys	Tadorna
Species	Thomasomys contradictus	Tadorna cristata

Evolutionary Relationship

Central Andes Oldfield Mouse and Crested Shelduck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Central Andes Oldfield Mouse

DD — Data Deficient

Crested Shelduck

CR — Critically Endangered

Physical Characteristics

Attribute	Central Andes Oldfield Mouse	Crested Shelduck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Central Andes Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Crested Shelduck

Habitat

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

Range

Found in Norway. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Central Andes Oldfield Mouse

The Central Andes Oldfield Mouse (Thomasomys contradictus) is a species in the genus Thomasomys. It is currently classified as Data Deficient on the IUCN Red List. Found in Colombia.