レイサンマガモ vs Ruff

Anas laysanensis compared with Calidris pugnax

Key Differences

• レイサンマガモ is Critically Endangered while Ruff is Least Concern.

Taxonomic Classification

Rank	レイサンマガモ	Ruff
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	Anseriformes (カモ目)	Charadriiformes (チドリ目)
Family	Anatidae	Scolopacidae
Genus	Anas	Calidris
Species	Anas laysanensis	Calidris pugnax

Evolutionary Relationship

レイサンマガモ and Ruff share a common ancestor at the Class level: Aves. (鳥類)

Conservation Status

レイサンマガモ

CR — Critically Endangered

Ruff

LC — Least Concern

Physical Characteristics

Attribute	レイサンマガモ	Ruff
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.

Ruff

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, 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。

Ruff

Ruff（Calidris pugnax）は IUCN レッドリストで軽度懸念（LC）に分類されている。分布域全体に広く分布し個体数も豊富で、個体群は安定しており差し迫った保全上の懸念はない。

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway