Curlew Sandpiper vs Ruff

Calidris ferruginea compared with Calidris pugnax

Key Differences

• Curlew Sandpiper is Not Evaluated while Ruff is Least Concern.

Taxonomic Classification

Rank	Curlew Sandpiper	Ruff
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order same	Charadriiformes (Charadriiformes)	Charadriiformes (Charadriiformes)
Family same	Scolopacidae	Scolopacidae
Genus same	Calidris	Calidris
Species	Calidris ferruginea	Calidris pugnax

Evolutionary Relationship

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

Conservation Status

Curlew Sandpiper

NE — Not Evaluated

Ruff

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

Curlew Sandpiper

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 (Ecuador).

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).

Curlew Sandpiper

Curlew Sandpiper (Calidris ferruginea) is classified as Not Evaluated (NE) on the IUCN Red List. Not yet evaluated against IUCN Red List criteria. Conservation status remains to be determined.

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.

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan 🇺🇸 United States