レイサンマガモ vs ホオジロオナガガモ

Anas laysanensis compared with Anas bahamensis

Key Differences

• レイサンマガモ is Critically Endangered while ホオジロオナガガモ is Least Concern.

Taxonomic Classification

Rank	レイサンマガモ	ホオジロオナガガモ
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 same	Anas	Anas
Species	Anas laysanensis	Anas bahamensis

Evolutionary Relationship

レイサンマガモ and ホオジロオナガガモ share a common ancestor at the Genus level: Anas.

Conservation Status

レイサンマガモ

CR — Critically Endangered

ホオジロオナガガモ

LC — Least Concern

Physical Characteristics

Attribute	レイサンマガモ	ホオジロオナガガモ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

ホオジロオナガガモ

Habitat

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

Range

Widely distributed across Asia (Israel), Europe (9 countries), and South America (Colombia, Ecuador, Venezuela).

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。

ホオジロオナガガモ

シロホオオナガガモ(Anas bahamensis)は、IUCNレッドリストで軽度懸念(LC)に分類される。生息域全体にわたり広く分布し個体群は安定しており、直接的な保全上の懸念はない。

Shared Countries

Both species can be found in 5 countries:

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