Common Eider vs Greater Long-tailed Hamster

Somateria mollissima compared with Tscherskia triton

Key Differences

• Common Eider is Near Threatened while Greater Long-tailed Hamster is Least Concern.

Taxonomic Classification

Rank	Common Eider	Greater Long-tailed Hamster
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	Somateria	Tscherskia
Species	Somateria mollissima	Tscherskia triton

Evolutionary Relationship

Common Eider and Greater Long-tailed Hamster share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Eider

NT — Near Threatened

Greater Long-tailed Hamster

LC — Least Concern

Physical Characteristics

Attribute	Common Eider	Greater Long-tailed Hamster
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Greater Long-tailed Hamster

Habitat

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.