普通燕鷗 vs Irrawaddy dolphin

Sterna hirundo compared with Orcaella brevirostris

Taxonomic Classification

Rank	普通燕鷗	Irrawaddy dolphin
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Aves (鳥綱)	Mammalia (哺乳動物)
Order	Charadriiformes (鸻形目)	Cetacea (Whales & Dolphins)
Family	Laridae	Delphinidae (Oceanic Dolphins)
Genus	Sterna	Orcaella
Species	Sterna hirundo	Orcaella brevirostris

Evolutionary Relationship

普通燕鷗 and Irrawaddy dolphin share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

普通燕鷗

EN — Endangered

Irrawaddy dolphin

EN — Endangered

Physical Characteristics

Attribute	普通燕鷗	Irrawaddy dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

普通燕鷗

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.

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

普通燕鷗

普通燕鸥（Sterna hirundo）在IUCN红色名录中被列为濒危（EN）。在野外面临较高的灭绝风险，种群数量显著下降，生存威胁持续存在。