Caspian Tern has been seen by:
| Birder | Location | Town | Date |
|---|---|---|---|
| Tom Magarian | Block Island | 04-Oct-2009 | |
| Phil Budlong | Ninigret Pond tidal flats (Charlestown Breachway | Charlestown | 22-Aug-2009 |
| Jun Zhuang | Breachway | Charlestown | 08-Aug-2009 |
| Paul L'Etoile | Ninigret Pond | Charlestown | 06-Jul-2009 |
| Carlos Pedro | Charlestown Flats | CHARLESTOWN | 02-May-2009 |
| Jan St.Jean | Charlestown Breachway | Charlestown | 28-Apr-2009 |