Ruff vs Western Sandpiper

Calidris pugnax compared with Calidris mauri

Taxonomic Classification

Rank	Ruff	Western Sandpiper
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Aves (นก)	Aves (นก)
Order same	Charadriiformes (Charadriiformes)	Charadriiformes (Charadriiformes)
Family same	Scolopacidae	Scolopacidae
Genus same	Calidris	Calidris
Species	Calidris pugnax	Calidris mauri

Evolutionary Relationship

Ruff and Western Sandpiper share a common ancestor at the Genus level: Calidris.

Conservation Status

Ruff

LC — Least Concern

Western Sandpiper

LC — Least Concern

Physical Characteristics

Attribute	Ruff	Western Sandpiper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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).

Western Sandpiper

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (Norway, Sweden), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Ruff

Ruff (Calidris pugnax) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Western Sandpiper

Western Sandpiper (Calidris mauri) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 6 countries:

🇨🇴 Colombia 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan 🇺🇸 United States 🇻🇪 Venezuela