Green-Underside Blue vs Red-billed Duck

Glaucopsyche alexis compared with Anas erythrorhyncha

Key Differences

• Green-Underside Blue is Near Threatened while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Green-Underside Blue	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	Lycaenidae	Anatidae
Genus	Glaucopsyche	Anas
Species	Glaucopsyche alexis	Anas erythrorhyncha

Evolutionary Relationship

Green-Underside Blue and Red-billed Duck share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Green-Underside Blue

NT — Near Threatened

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Green-Underside Blue	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Green-Underside Blue

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (37 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Red-billed Duck

Habitat

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

Range

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

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 4 countries:

🇧🇪 Belgium 🇫🇷 France 🇩🇪 Germany 🇳🇴 Norway