Broad-barred Knot-horn vs Common Eider

Acrobasis consociella compared with Somateria mollissima

Key Differences

• Broad-barred Knot-horn is Least Concern while Common Eider is Near Threatened.

Taxonomic Classification

Rank	Broad-barred Knot-horn	Common Eider
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Lepidoptera (Butterflies & Moths)	Anseriformes (Anseriformes)
Family	Pyralidae	Anatidae
Genus	Acrobasis	Somateria
Species	Acrobasis consociella	Somateria mollissima

Evolutionary Relationship

Broad-barred Knot-horn and Common Eider share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Broad-barred Knot-horn

LC — Least Concern

Common Eider

NT — Near Threatened

Physical Characteristics

Attribute	Broad-barred Knot-horn	Common Eider
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Broad-barred Knot-horn

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Broad-barred Knot-horn

The Broad-barred Knot-horn (Acrobasis consociella) is a species in the genus Acrobasis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

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.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden