Western Sandpiper
Calidris mauri
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyScolopacidae (Sandpipers and Allies)
- GenusCalidris (Calidris Sandpipers)
- SpeciesCalidris mauri (Western Sandpiper)
The western sandpiper (Calidris mauri) is a small migratory shorebird. The genus name is from Ancient Greek kalidris or skalidris, a term used by Aristotle for some grey-coloured waterside birds. The specific mauri commemorates Italian botanist Ernesto Mauri (1791–1836). This is one of the most abundant shorebird species in North America, with a population in the millions. Within the genus Calidris the western sandpiper is most closely related to the semipalmated sandpiper (Calidris pusilla). Wikipedia →
Closest Relatives at Gates of the Arctic National Park
Least Sandpiper
Calidris minutilla
Baird's Sandpiper
Calidris bairdii
Semipalmated Sandpiper
Calidris pusilla
Dunlin
Calidris alpina
Spotted Sandpiper
Actitis macularius
Lesser Yellowlegs
Tringa flavipes
Wilson's Snipe
Gallinago delicata
Ruddy Turnstone
Arenaria interpres
Upland Sandpiper
Bartramia longicauda
Red-necked Phalarope
Phalaropus lobatus
Wandering Tattler
Tringa incana
Solitary Sandpiper
Tringa solitaria
📅 Monthly Probability
Fewer than 5 records of Western Sandpiper at Gates of the Arctic National Park — not enough to chart months honestly.
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there