Common Shelduck vs Grizzled Colilargo

Tadorna tadorna compared with Oligoryzomys griseolus

Taxonomic Classification

Rank	Common Shelduck	Grizzled Colilargo
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Rodentia (Rodents)
Family	Anatidae	Cricetidae
Genus	Tadorna	Oligoryzomys
Species	Tadorna tadorna	Oligoryzomys griseolus

Evolutionary Relationship

Common Shelduck and Grizzled Colilargo share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Shelduck

LC — Least Concern

Grizzled Colilargo

LC — Least Concern

Physical Characteristics

Attribute	Common Shelduck	Grizzled Colilargo
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Shelduck

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and Taiwan.

Grizzled Colilargo

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Common Shelduck

Common Shelduck (Tadorna tadorna) 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.