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 →
<5% of wildlife watchers report a Western Sandpiper sighting in Gandoca-Manzanillo Wildlife Refuge, based on 7 days of visitor records from GBIF citizen-science data.
Closest Relatives at Gandoca-Manzanillo Wildlife Refuge
Red Knot
Calidris canutus
Sanderling
Calidris alba
Least Sandpiper
Calidris minutilla
Semipalmated Sandpiper
Calidris pusilla
Buff-breasted Sandpiper
Calidris subruficollis
Pectoral Sandpiper
Calidris melanotos
Hudsonian Whimbrel
Numenius hudsonicus
Spotted Sandpiper
Actitis macularius
Whimbrel
Numenius phaeopus
Willet
Tringa semipalmata
Solitary Sandpiper
Tringa solitaria
Ruddy Turnstone
Arenaria interpres
📅 Monthly Probability
☀️ 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
Parks Where Found
Quick answers
What are the chances of seeing a Western Sandpiper in Gandoca-Manzanillo Wildlife Refuge?
About 1% of wildlife watchers report a Western Sandpiper sighting in Gandoca-Manzanillo Wildlife Refuge, based on 7 days of visitor records from GBIF citizen-science data.
When is the best time to see Western Sandpiper in Gandoca-Manzanillo Wildlife Refuge?
July has the highest sighting rate for Western Sandpiper in Gandoca-Manzanillo Wildlife Refuge in our monthly data.