Eurasian Tree Sparrow vs Four-toed Hedgehog

Passer montanus compared with Atelerix albiventris

Key Differences

• Eurasian Tree Sparrow is Endangered while Four-toed Hedgehog is Least Concern.

Taxonomic Classification

Rank	Eurasian Tree Sparrow	Four-toed Hedgehog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Passeriformes (Songbirds)	Erinaceomorpha (Erinaceomorpha)
Family	Passeridae	Erinaceidae
Genus	Passer	Atelerix
Species	Passer montanus	Atelerix albiventris

Evolutionary Relationship

Eurasian Tree Sparrow and Four-toed Hedgehog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Eurasian Tree Sparrow

EN — Endangered

Four-toed Hedgehog

LC — Least Concern

Physical Characteristics

Attribute	Eurasian Tree Sparrow	Four-toed Hedgehog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Eurasian Tree Sparrow

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Indonesia, Philippines, Singapore), Europe (7 countries), North America (Canada, United States), and Oceania and the Pacific (Australia, Marshall Islands). Currently classified as 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.

Eurasian Tree Sparrow

Eurasian Tree Sparrow (Passer montanus) 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.

Shared Countries

Both species can be found in 1 countries:

🇪🇸 Spain