アジサシ vs ハッカチョウ

Sterna hirundo compared with Acridotheres cristatellus

Key Differences

• アジサシ is Endangered while ハッカチョウ is Least Concern.

Taxonomic Classification

Rank	アジサシ	ハッカチョウ
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	Charadriiformes (チドリ目)	Passeriformes (スズメ目)
Family	Laridae	Sturnidae
Genus	Sterna	Acridotheres
Species	Sterna hirundo	Acridotheres cristatellus

Evolutionary Relationship

アジサシ and ハッカチョウ share a common ancestor at the Class level: Aves. (鳥類)

Conservation Status

アジサシ

EN — Endangered

ハッカチョウ

LC — Least Concern

Physical Characteristics

Attribute	アジサシ	ハッカチョウ
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.

ハッカチョウ

Habitat

Inhabits tropical and subtropical dry broadleaf forests and tropical and subtropical grasslands and savannas within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan, Singapore, United Arab Emirates), Europe (7 countries), and South America (Argentina, Bolivia).

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。

ハッカチョウ

カンムリハッカ（Acridotheres cristatellus）はIUCNレッドリストで軽度懸念（LC）に分類される。分布域全体で広く豊富に生息し、個体数は安定しており、即座の保全上の懸念はない。

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇵🇹 Portugal