Common Eider vs Four-toed Hedgehog

Somateria mollissima compared with Atelerix albiventris

Key Differences

• Common Eider is Near Threatened while Four-toed Hedgehog is Least Concern.

Taxonomic Classification

Rank	Common Eider	Four-toed Hedgehog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Erinaceomorpha (Erinaceomorpha)
Family	Anatidae	Erinaceidae
Genus	Somateria	Atelerix
Species	Somateria mollissima	Atelerix albiventris

Evolutionary Relationship

Common Eider and Four-toed Hedgehog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Eider

NT — Near Threatened

Four-toed Hedgehog

LC — Least Concern

Physical Characteristics

Attribute	Common Eider	Four-toed Hedgehog
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.

Four-toed Hedgehog

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Ecuador and Spain.

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.