Family Sandpipers, Snipes, Phalaropes (Scolopacidae)

Least Concern

Western Sandpiper (Calidris mauri)


French: Bécasseau d’Alaska German: Bergstrandläufer Spanish: Correlimos de Alaska

Ereunetes Mauri


, 1857,

South Carolina, USA


Formerly placed in Ereunetes. Genetic data indicate that this species and C. pusilla are sisters#R. Monotypic.


E Chukotskiy Peninsula and W & N Alaska. Winters on Pacific coast from British Columbia (mainly from N California) to Peru, and locally on Atlantic coast from S New Jersey through Gulf of Mexico and West Indies to French Guiana.

Descriptive notes

14–17 cm; 18–42 g; wingspan 28–37 cm. Distinctive with rufous-chestnut on crown and ear-coverts; chestnut and black scapulars with pale fringes; neck,... read more


On breeding grounds (occasionally at spring stopover sites), song (given from ground or during... read more


For breeding, occupies tundra of low Arctic and subarctic, preferably dominated by dwarf birch,... read more

Food and feeding

Diet rather diverse. During breeding, mainly insects (larvae, pupae and some adults), especially Muscidae and chironomids, also craneflies... read more


Lays mid May to late Jun, earliest at southernmost sites, with larger males (and small females) tending to nest earlier on average.... read more


Unlike other small Calidris, migration appears as series of shorter flights, with... read more

Status and conservation

Not globally threatened (Least Concern). Total world population estimated at 2,000,000–3,000,000 birds (1994) or 2,800,000–4,300,000 individuals (1992–1995... read more

Recommended citation

Van Gils, J., Wiersma, P. & Kirwan, G.M. (2020). Western Sandpiper (Calidris mauri). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 26 February 2020).