Common Eider vs Japanese Short-tailed Bat

Somateria mollissima compared with Eptesicus japonensis

Key Differences

• Common Eider is Near Threatened while Japanese Short-tailed Bat is Vulnerable.

Taxonomic Classification

Rank	Common Eider	Japanese Short-tailed Bat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Chiroptera (Bats)
Family	Anatidae	Vespertilionidae
Genus	Somateria	Eptesicus
Species	Somateria mollissima	Eptesicus japonensis

Evolutionary Relationship

Common Eider and Japanese Short-tailed Bat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Eider

NT — Near Threatened

Japanese Short-tailed Bat

VU — Vulnerable

Physical Characteristics

Attribute	Common Eider	Japanese Short-tailed Bat
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.

Japanese Short-tailed Bat

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.