Least Bittern has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Wayne Munns | Third Beach Restoration Area | Middletown | Newport | 15-Aug-2013 |
| Phil Budlong | Trustom Pond NWR | South Kingstown | Washington | 30-Jun-2013 |
| Cathy Gim | Mud Pond | South Kingstown | Washington | 29-Jun-2013 |
| John Magill | Mud Pond | South Kingstown | Washington | 29-Jun-2013 |
| Barbara Sherman | Mud Pond, Matunuck | South Kingstown | Washington | 29-Jun-2013 |
| Carlos Pedro | Mud Pond | South Kingstown | Washington | 29-Jun-2013 |
| Jan St.Jean | Mud pond | South Kingstown | Washington | 27-Jun-2013 |