Crested Shelduck vs Red-billed Duck

Tadorna cristata compared with Anas erythrorhyncha

Key Differences

• Crested Shelduck is Critically Endangered while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Crested Shelduck	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order same	Anseriformes (Anseriformes)	Anseriformes (Anseriformes)
Family same	Anatidae	Anatidae
Genus	Tadorna	Anas
Species	Tadorna cristata	Anas erythrorhyncha

Evolutionary Relationship

Crested Shelduck and Red-billed Duck share a common ancestor at the Family level: Anatidae.

Conservation Status

Crested Shelduck

CR — Critically Endangered

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Crested Shelduck	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Crested Shelduck

Habitat

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

Range

Found in Norway. Currently classified as Critically Endangered 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).

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 1 countries:

🇳🇴 Norway