Bordered Marble vs Red-billed Duck

Endothenia marginana compared with Anas erythrorhyncha

Key Differences

• Bordered Marble is Vulnerable while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Bordered Marble	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Lepidoptera (Butterflies & Moths)	Anseriformes (Anseriformes)
Family	Tortricidae	Anatidae
Genus	Endothenia	Anas
Species	Endothenia marginana	Anas erythrorhyncha

Evolutionary Relationship

Bordered Marble and Red-billed Duck share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bordered Marble

VU — Vulnerable

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Bordered Marble	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bordered Marble

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

Habitat

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

Range

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

Bordered Marble

The Bordered Marble (Endothenia marginana) is a species in the genus Endothenia. It is currently classified as Vulnerable on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

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