Common Eider vs Gray-cowled Wood-Rail

Somateria mollissima compared with Aramides cajanea

Key Differences

• Common Eider is Near Threatened while Gray-cowled Wood-Rail is Least Concern.

Taxonomic Classification

Rank	Common Eider	Gray-cowled Wood-Rail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Anseriformes (Anseriformes)	Gruiformes (Gruiformes)
Family	Anatidae	Rallidae
Genus	Somateria	Aramides
Species	Somateria mollissima	Aramides cajanea

Evolutionary Relationship

Common Eider and Gray-cowled Wood-Rail share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Common Eider

NT — Near Threatened

Gray-cowled Wood-Rail

LC — Least Concern

Physical Characteristics

Attribute	Common Eider	Gray-cowled Wood-Rail
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.

Gray-cowled Wood-Rail

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, and 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.

Gray-cowled Wood-Rail

Gray-cowled Wood-Rail (Aramides cajanea) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway