Semipalmated Sandpiper
Calidris pusilla
The semipalmated sandpiper is a very small shorebird. The genus name is from Ancient Greek kalidris or skalidris, a term used by Aristotle for some grey-coloured waterside birds. The specific pusilla is Latin for "very small". Source
Where it is now
In the last 8 weeks this bird was recorded 84 times across 10 areas (each area is a 5 degree square).
See the Semipalmated Sandpiper on the live map
Arrival dates
The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.
| Region | First arrival | Last arrival | Typical peak | Areas |
|---|---|---|---|---|
| North America | 17 August 2026 | 17 August 2026 | 17 August 2026 | 1 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.