Semipalmated Sandpiper
Calidris pusilla
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyScolopacidae (Sandpipers and Allies)
- GenusCalidris (Calidris Sandpipers)
- SpeciesCalidris pusilla (Semipalmated Sandpiper)
Closest Relatives at Ostional Wildlife Refuge
Sanderling
Calidris alba
Least Sandpiper
Calidris minutilla
Aphriza virgata
Calidris virgata
Western Sandpiper
Calidris mauri
Pectoral Sandpiper
Calidris melanotos
Stilt Sandpiper
Calidris himantopus
Spotted Sandpiper
Actitis macularius
Willet
Tringa semipalmata
Whimbrel
Numenius phaeopus
Whimbrel
Numenius hudsonicus
Ruddy Turnstone
Arenaria interpres
Wandering Tattler
Tringa incana
📅 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 Semipalmated Sandpiper in Ostional Wildlife Refuge?
About 2% of visitor-days record a Semipalmated Sandpiper sighting in Ostional Wildlife Refuge, based on 10 observer-days of citizen-science data from GBIF.
When is the best time to see Semipalmated Sandpiper in Ostional Wildlife Refuge?
March has the highest sighting rate for Semipalmated Sandpiper in Ostional Wildlife Refuge in our monthly data.