Brown Rat vs Common Eider

Rattus norvegicus compared with Somateria mollissima

Key Differences

• Brown Rat is Least Concern while Common Eider is Near Threatened.

Taxonomic Classification

Rank	Brown Rat	Common Eider
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class	Mammalia (포유류)	Aves (새)
Order	Rodentia (설치류)	Anseriformes (기러기목)
Family	Muridae (Mice & Rats)	Anatidae
Genus	Rattus	Somateria
Species	Rattus norvegicus	Somateria mollissima

Evolutionary Relationship

Brown Rat and Common Eider share a common ancestor at the Phylum level: Chordata. (척삭동물)

Conservation Status

Brown Rat

LC — Least Concern

Common Eider

NT — Near Threatened

Physical Characteristics

Attribute	Brown Rat	Common Eider
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).

Common Eider

Habitat

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

Range

Found across Europe (5 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Brown Rat

집쥐(Rattus norvegicus)는 IUCN 적색목록에서 관심대상(LC)으로 분류됩니다. 분포 범위 전반에 걸쳐 널리 서식하며 개체 수가 안정적으로 유지되고 있어 즉각적인 보전 우려가 없습니다.

Common Eider

솜털오리(Somateria mollissima)는 IUCN 적색목록에서 준위협(NT)으로 분류된다. 위협종 기준에 근접하며 보전 조치 없이는 취약해질 수 있는 개체군이다.

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇦 Ukraine 🇺🇸 United States