Common Tern vs Irrawaddy dolphin

Sterna hirundo compared with Orcaella brevirostris

Taxonomic Classification

Rank	Common Tern	Irrawaddy dolphin
Kingdom same	Animalia (प्राणी)	Animalia (प्राणी)
Phylum same	Chordata (रज्जुकी)	Chordata (रज्जुकी)
Class	Aves (पक्षी)	Mammalia (स्तनधारी)
Order	Charadriiformes (करैड्रिफोर्मीस)	Cetacea (Whales & Dolphins)
Family	Laridae	Delphinidae (Oceanic Dolphins)
Genus	Sterna	Orcaella
Species	Sterna hirundo	Orcaella brevirostris

Evolutionary Relationship

Common Tern and Irrawaddy dolphin share a common ancestor at the Phylum level: Chordata. (रज्जुकी)

Conservation Status

Common Tern

EN — Endangered

Irrawaddy dolphin

EN — Endangered

Physical Characteristics

Attribute	Common Tern	Irrawaddy dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Irrawaddy dolphin

Habitat

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.