Black-eared Red-backed Vole vs Common Eider

Eothenomys olitor compared with Somateria mollissima

Key Differences

• Black-eared Red-backed Vole is Least Concern while Common Eider is Near Threatened.

Taxonomic Classification

Rank	Black-eared Red-backed Vole	Common Eider
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	Eothenomys	Somateria
Species	Eothenomys olitor	Somateria mollissima

Evolutionary Relationship

Black-eared Red-backed Vole and Common Eider share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-eared Red-backed Vole

LC — Least Concern

Common Eider

NT — Near Threatened

Physical Characteristics

Attribute	Black-eared Red-backed Vole	Common Eider
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-eared Red-backed Vole

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Black-eared Red-backed Vole

The Black-eared Red-backed Vole (Eothenomys olitor) is a species in the genus Eothenomys. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Common Eider

Common Eider (Somateria mollissima) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.