Cliff Swallow has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Sue Palmer | Trustom NWR | South Kingstown | Washington | 04-May-2021 |
| Dianne Auld | Trustom | South Kingstown | Washington | 01-May-2021 |
| Carlos Pedro | Trustom | South Kingstown | Washington | 01-May-2021 |
| Jan St.Jean | Trustom | South Kingstown | Washington | 01-May-2021 |
| Jess Bishop | Trustom | South Kingstown | Washington | 01-May-2021 |