Crested Shelduck vs Ruddy Shelduck

Tadorna cristata compared with Tadorna ferruginea

Key Differences

• Crested Shelduck is Critically Endangered while Ruddy Shelduck is Not Evaluated.

Taxonomic Classification

Rank	Crested Shelduck	Ruddy Shelduck
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 same	Tadorna	Tadorna
Species	Tadorna cristata	Tadorna ferruginea

Evolutionary Relationship

Crested Shelduck and Ruddy Shelduck share a common ancestor at the Genus level: Tadorna.

Conservation Status

Crested Shelduck

CR — Critically Endangered

Ruddy Shelduck

NE — Not Evaluated

Physical Characteristics

Attribute	Crested Shelduck	Ruddy Shelduck
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.

Ruddy Shelduck

Habitat

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

Range

Widely distributed across Asia (Israel, Taiwan), Europe (19 countries), and North America (United States).

Ruddy Shelduck

Ruddy Shelduck (Tadorna ferruginea) is classified as Not Evaluated (NE) on the IUCN Red List. Not yet evaluated against IUCN Red List criteria. Conservation status remains to be determined.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway