アジサシ vs メリケンアジサシ

Sterna hirundo compared with Sterna forsteri

Key Differences

• アジサシ is Endangered while メリケンアジサシ is Least Concern.

Taxonomic Classification

Rank	アジサシ	メリケンアジサシ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Aves (鳥類)	Aves (鳥類)
Order same	Charadriiformes (チドリ目)	Charadriiformes (チドリ目)
Family same	Laridae	Laridae
Genus same	Sterna	Sterna
Species	Sterna hirundo	Sterna forsteri

Evolutionary Relationship

アジサシ and メリケンアジサシ share a common ancestor at the Genus level: Sterna.

Conservation Status

アジサシ

EN — Endangered

メリケンアジサシ

LC — Least Concern

Physical Characteristics

Attribute	アジサシ	メリケンアジサシ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

アジサシ

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.

メリケンアジサシ

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Belgium, Colombia, Norway, Sweden, and United States.

アジサシ

アジサシ（Sterna hirundo）はIUCNレッドリストで危機（EN）に分類されている。野生での絶滅リスクが高く、著しい個体数の減少と生存への継続的な脅威がある。

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇨🇴 Colombia 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States