Sterne pierregarin vs Gilliard's Flying Fox

Sterna hirundo compared with Pteropus gilliardorum

Key Differences

• Sterne pierregarin is Endangered while Gilliard's Flying Fox is Vulnerable.

Taxonomic Classification

Rank	Sterne pierregarin	Gilliard's Flying Fox
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (oiseau)	Mammalia (mammifères)
Order	Charadriiformes (Charadriiformes)	Chiroptera (Bats)
Family	Laridae	Pteropodidae (Fruit Bats)
Genus	Sterna	Pteropus (Flying Foxes)
Species	Sterna hirundo	Pteropus gilliardorum

Evolutionary Relationship

Sterne pierregarin and Gilliard's Flying Fox share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Sterne pierregarin

EN — Endangered

Gilliard's Flying Fox

VU — Vulnerable

Physical Characteristics

Attribute	Sterne pierregarin	Gilliard's Flying Fox
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Sterne pierregarin

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.

Gilliard's Flying Fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Sterne pierregarin

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.