Brown Rat vs Chiloe Wigeon

Rattus norvegicus compared with Mareca sibilatrix

Key Differences

• Brown Rat is Least Concern while Chiloe Wigeon is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	Chiloe Wigeon
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Anseriformes (Anseriformes)
Family	Muridae (Mice & Rats)	Anatidae
Genus	Rattus	Mareca
Species	Rattus norvegicus	Mareca sibilatrix

Evolutionary Relationship

Brown Rat and Chiloe Wigeon share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Rat

LC — Least Concern

Chiloe Wigeon

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	Chiloe Wigeon
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

Chiloe Wigeon

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Brown Rat

Brown Rat (Rattus norvegicus) 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.

Chiloe Wigeon

The Chiloe Wigeon (Mareca sibilatrix) is a species in the genus Mareca. Typically found in various aerial, terrestrial, and aquatic environments.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden