Red-billed Duck vs Sea-aster case-bearer

Anas erythrorhyncha compared with Coleophora asteris

Key Differences

• Red-billed Duck is Least Concern while Sea-aster case-bearer is Vulnerable.

Taxonomic Classification

Rank	Red-billed Duck	Sea-aster case-bearer
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Anseriformes (Anseriformes)	Lepidoptera (Butterflies & Moths)
Family	Anatidae	Coleophoridae
Genus	Anas	Coleophora
Species	Anas erythrorhyncha	Coleophora asteris

Evolutionary Relationship

Red-billed Duck and Sea-aster case-bearer share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Red-billed Duck

LC — Least Concern

Sea-aster case-bearer

VU — Vulnerable

Physical Characteristics

Attribute	Red-billed Duck	Sea-aster case-bearer
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Red-billed Duck

Habitat

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

Range

Found across Europe (6 countries) and South America (Ecuador).

Sea-aster case-bearer

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Red-billed Duck

Red-billed Duck (Anas erythrorhyncha) 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 2 countries:

🇧🇪 Belgium 🇳🇴 Norway