King Rail has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Mark Pagliarini | Great swamp | South Kingstown | Washington | 25-May-2016 |
| Barbara Sherman | Great Swamp MA | South Kingstown | Washington | 25-May-2016 |
| Matt Schenck | Great Swamp | South Kingstown | Washington | 24-May-2016 |
| Don Heitzmann | Great Swamp | South Kingstown | Washington | 24-May-2016 |
| Carlos Pedro | Great Swamp | South Kingstown | Washington | 22-May-2016 |
| Wayne Munns | Great Swamp MA | South Kingstown | Washington | 22-May-2016 |