Grasläufer vs Surfbird

Calidris subruficollis compared with Calidris virgata

Key Differences

• Grasläufer is Near Threatened while Surfbird is Least Concern.

Taxonomic Classification

Rank	Grasläufer	Surfbird
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Aves (Vögel)	Aves (Vögel)
Order same	Charadriiformes (Regenpfeiferartige)	Charadriiformes (Regenpfeiferartige)
Family same	Scolopacidae	Scolopacidae
Genus same	Calidris	Calidris
Species	Calidris subruficollis	Calidris virgata

Evolutionary Relationship

Grasläufer and Surfbird share a common ancestor at the Genus level: Calidris.

Conservation Status

Grasläufer

NT — Near Threatened

Surfbird

LC — Least Concern

Physical Characteristics

Attribute	Grasläufer	Surfbird
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Grasläufer

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). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Surfbird

Habitat

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

Range

Distributed across Colombia and Norway.

Grasläufer

Buff-breasted Sandpiper (Calidris subruficollis) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇳🇴 Norway