Semipalmated Sandpiper (Calidris pusilla)Where and when to see it in the UK
Status not yet classified · reporting peaks August · Sandpipers and Allies · BOU category A
Peak months
Contains OS data © Crown copyright and database right 2026 (grid squares, place names from OS Open Names). Northern Ireland place names: OSNI Open Data, OGL v3.0. County and country boundaries: Office for National Statistics, Open Government Licence v3.0. Coastline: Natural Earth. Bird records from the data partners listed here.
Semipalmated Sandpiper has been recorded in 49 of the 2,971 10 km squares covering UK land (2%) in records to 2026. Its strongest squares are in England, Scotland and Wales. Reporting peaks in August.
Conservation status: Near Threatened (IUCN Red List, NT)
View on the IUCN Red List- Very high
- 46% or more of visits
- High
- 1% to 46%
- Moderate
- <1% to 1%
- Low
- under <1%
- Surveyed, not recorded
- at least 20 qualifying visits, no record
- Insufficient records
- too few visits to say
- Lighter fill
- Few visits, lower confidence
- Small dot
- Occasional: a single record, or out of season
Relative to this species' best squares (how classes are calculated)
Seasonality
| Month | Relative to peak | Share of visits | Typical class |
|---|---|---|---|
| January | 1% | <1% | Moderate |
| February | 0% | <1% | Insufficient records |
| March | 0% | <1% | Insufficient records |
| April | 0% | <1% | Insufficient records |
| May | 0% | <1% | Very high |
| June | 0% | <1% | Moderate |
| July | 13% | <1% | Low |
| August | 100% | <1% | Very high |
| September | 26% | <1% | Low |
| October | 85% | <1% | Moderate |
| November | 6% | <1% | Low |
| December | 0% | <1% | Insufficient records |
Squares with the highest reporting rate in August
| Square | Where | Share of visits | Class |
|---|---|---|---|
| NB24 | Na h-Eileanan Siar, Scotland | 100% | Very high |
| NT67 | East Lothian, Scotland | 100% | Very high |
| SM80 | Pembrokeshire, Wales | 100% | Very high |
| SN14 | Pembrokeshire, Wales | 100% | Very high |
| TR01 | Kent, England | 100% | Very high |
| SZ89 | West Sussex, England | 13% | High |
| SW53 | Cornwall, England | 9% | High |
| TM46 | Suffolk, England | 1% | High |
| ST16 | Vale of Glamorgan, Wales | <1% | Moderate |
| NY26 | Dumfries and Galloway, Scotland | <1% | Moderate |