Common Eider vs Diminutive Serotine

Somateria mollissima compared with Eptesicus diminutus

Key Differences

• Common Eider is Near Threatened while Diminutive Serotine is Data Deficient.

Taxonomic Classification

Rank	Common Eider	Diminutive Serotine
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 diminutus

Evolutionary Relationship

Common Eider and Diminutive Serotine share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Eider

NT — Near Threatened

Diminutive Serotine

DD — Data Deficient

Physical Characteristics

Attribute	Common Eider	Diminutive Serotine
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.

Diminutive Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.

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.