Речная крачка vs Foca Pia

Sterna hirundo compared with Pagophilus groenlandicus

Key Differences

• Речная крачка is Endangered while Foca Pia is Not Evaluated.

Taxonomic Classification

Rank	Речная крачка	Foca Pia
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class	Aves (птицы)	Mammalia (млекопитающие)
Order	Charadriiformes (ржанкообразные)	Pinnipedia (Seals & Sea Lions)
Family	Laridae	Phocidae (True Seals)
Genus	Sterna	Pagophilus
Species	Sterna hirundo	Pagophilus groenlandicus

Evolutionary Relationship

Речная крачка and Foca Pia share a common ancestor at the Phylum level: Chordata. (хордовые)

Conservation Status

Речная крачка

EN — Endangered

Foca Pia

NE — Not Evaluated

Physical Characteristics

Attribute	Речная крачка	Foca Pia
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Речная крачка

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.

Foca Pia

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Речная крачка

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.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden