Seaside Sparrow has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Don Heitzmann | Ninigret Mud Flats | Charlestown | Washington | 14-Jul-2021 |
| Jen Leitao | Charlestown Breachway | Charlestown | Washington | 14-Jul-2021 |
| Barbara Sherman | Charlestown Breachway | Charlestown | Washington | 27-Jun-2021 |
| Jess Bishop | Charlestown Breachway | Charlestown | Washington | 26-Jun-2021 |
| Dick & Marge Bradley | Seapowet marsh | Tiverton | Newport | 17-Jun-2021 |
| Paul L'Etoile | Ninigret Pond | Charlestown | Washington | 04-Jun-2021 |
| Jan St.Jean | Breachwa | Charlestown | Washington | 26-May-2021 |
| Sue Palmer | Succotash Marsh | South Kingstown | Washington | 25-May-2021 |
| Carlos Pedro | Charlestown Breachway Tidal Flats | Charlestown | Washington | 14-May-2021 |