ハッカチョウ vs レイサンマガモ

Acridotheres cristatellus compared with Anas laysanensis

Key Differences

• ハッカチョウ is Least Concern while レイサンマガモ is Critically Endangered.

Taxonomic Classification

Rank	ハッカチョウ	レイサンマガモ
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	Passeriformes (スズメ目)	Anseriformes (カモ目)
Family	Sturnidae	Anatidae
Genus	Acridotheres	Anas
Species	Acridotheres cristatellus	Anas laysanensis

Evolutionary Relationship

ハッカチョウ and レイサンマガモ share a common ancestor at the Class level: Aves. (鳥類)

Conservation Status

ハッカチョウ

LC — Least Concern

レイサンマガモ

CR — Critically Endangered

Physical Characteristics

Attribute	ハッカチョウ	レイサンマガモ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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).

レイサンマガモ

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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。

レイサンマガモ

レイサンガモ（Anas laysanensis）はIUCNレッドリストで絶滅寸前（CR）に分類されています。深刻な個体数減少と生息地の喪失により、野生での絶滅リスクが極めて高い種です。

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇫🇷 France 🇳🇱 Netherlands 🇳🇴 Norway 🇬🇧 United Kingdom