Bare-bellied Hedgehog vs Common Tern

Paraechinus nudiventris compared with Sterna hirundo

Key Differences

• Bare-bellied Hedgehog is Least Concern while Common Tern is Endangered.

Taxonomic Classification

Rank	Bare-bellied Hedgehog	Common Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Erinaceomorpha (Erinaceomorpha)	Charadriiformes (Charadriiformes)
Family	Erinaceidae	Laridae
Genus	Paraechinus	Sterna
Species	Paraechinus nudiventris	Sterna hirundo

Evolutionary Relationship

Bare-bellied Hedgehog and Common Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bare-bellied Hedgehog

LC — Least Concern

Common Tern

EN — Endangered

Physical Characteristics

Attribute	Bare-bellied Hedgehog	Common Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bare-bellied Hedgehog

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common Tern

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Bare-bellied Hedgehog

The Bare-bellied Hedgehog (Paraechinus nudiventris) is a species in the genus Paraechinus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Common Tern

Common Tern (Sterna hirundo) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.