Red-billed Duck vs thistle aphid

Anas erythrorhyncha compared with Brachycaudus cardui

Key Differences

• Red-billed Duck is Least Concern while thistle aphid is Not Evaluated.

Taxonomic Classification

Rank	Red-billed Duck	thistle aphid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Anseriformes (Anseriformes)	Hemiptera (Hemiptera)
Family	Anatidae	Aphididae
Genus	Anas	Brachycaudus
Species	Anas erythrorhyncha	Brachycaudus cardui

Evolutionary Relationship

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

Conservation Status

Red-billed Duck

LC — Least Concern

thistle aphid

NE — Not Evaluated

Physical Characteristics

Attribute	Red-billed Duck	thistle aphid
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).

thistle aphid

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (6 countries) and North America (United States).

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