Long-tailed Ground Squirrel vs Ruff

Urocitellus undulatus compared with Calidris pugnax

Taxonomic Classification

Rank	Long-tailed Ground Squirrel	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	Rodentia (ネズミ目)	Charadriiformes (チドリ目)
Family	Sciuridae (Squirrels)	Scolopacidae
Genus	Urocitellus	Calidris
Species	Urocitellus undulatus	Calidris pugnax

Evolutionary Relationship

Long-tailed Ground Squirrel and Ruff share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Long-tailed Ground Squirrel

LC — Least Concern

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Long-tailed Ground Squirrel	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Long-tailed Ground Squirrel

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。