Crested Shelduck vs Four-toed Hedgehog

Tadorna cristata compared with Atelerix albiventris

Key Differences

• Crested Shelduck is Critically Endangered while Four-toed Hedgehog is Least Concern.

Taxonomic Classification

Rank	Crested Shelduck	Four-toed Hedgehog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Erinaceomorpha (Erinaceomorpha)
Family	Anatidae	Erinaceidae
Genus	Tadorna	Atelerix
Species	Tadorna cristata	Atelerix albiventris

Evolutionary Relationship

Crested Shelduck and Four-toed Hedgehog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Crested Shelduck

CR — Critically Endangered

Four-toed Hedgehog

LC — Least Concern

Physical Characteristics

Attribute	Crested Shelduck	Four-toed Hedgehog
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.

Four-toed Hedgehog

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Ecuador and Spain.