Mourning Warbler has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Matt Schenck | Norman Bird Sanctuary | Middletown | Newport | 30-Sep-2018 |
| Dianne Auld | Trustom | South Kingstown | Washington | 29-Sep-2018 |
| Don Heitzmann | Colt State Park | Bristol | Bristol | 20-May-2018 |
| Carlos Pedro | Colt State Park | Bristol | Bristol | 20-May-2018 |
| Jan St.Jean | Colt state park | Bristol | Bristol | 20-May-2018 |