オオホシハジロ vs レイサンマガモ

Aythya valisineria compared with Anas laysanensis

Key Differences

• オオホシハジロ is Not Evaluated while レイサンマガモ is Critically Endangered.

Taxonomic Classification

Rank	オオホシハジロ	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 same	Anseriformes (カモ目)	Anseriformes (カモ目)
Family same	Anatidae	Anatidae
Genus	Aythya	Anas
Species	Aythya valisineria	Anas laysanensis

Evolutionary Relationship

オオホシハジロ and レイサンマガモ share a common ancestor at the Family level: Anatidae.

Conservation Status

オオホシハジロ

NE — Not Evaluated

レイサンマガモ

CR — Critically Endangered

Physical Characteristics

Attribute	オオホシハジロ	レイサンマガモ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

オオホシハジロ

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and North America (United States).

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.

オオホシハジロ

カンバスバック（Aythya valisineria）はIUCNレッドリストで未評価（NE）に分類されています。まだIUCNレッドリストの基準に照らした評価が行われておらず、保全状況は未確定です。

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