Koyama Koumori vs Ruff

Nyctalus furvus compared with Calidris pugnax

Key Differences

• Koyama Koumori is Endangered while Ruff is Least Concern.

Taxonomic Classification

Rank	Koyama Koumori	Ruff
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Aves (鳥類)
Order	Chiroptera (翼手目)	Charadriiformes (チドリ目)
Family	Vespertilionidae	Scolopacidae
Genus	Nyctalus	Calidris
Species	Nyctalus furvus	Calidris pugnax

Evolutionary Relationship

Koyama Koumori and Ruff share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Koyama Koumori

EN — Endangered

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Koyama Koumori	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Koyama Koumori

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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).

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。