Common Eider vs Harmless Serotine

Somateria mollissima compared with Eptesicus innoxius

Taxonomic Classification

Rank	Common Eider	Harmless 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 innoxius

Evolutionary Relationship

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

Conservation Status

Common Eider

NT — Near Threatened

Harmless Serotine

NT — Near Threatened

Physical Characteristics

Attribute	Common Eider	Harmless 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.

Harmless Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.