Black Guillemot has been seen by:
| Birder | Location | Town | Date |
|---|---|---|---|
| Wayne Munns | Fort Wetherill | Jamestown | 30-Dec-2010 |
| Barbara Sherman | Ft Wetherill | Jamestown | 30-Dec-2010 |
| Michelle | 10-Nov-2010 | ||
| Tom Magarian | Block Island | 10-Mar-2010 | |
| Greg Sargeant | Block Island | New Shoreham | 05-Mar-2010 |
| Mike Tucker | Block Island | 21-Feb-2010 | |
| Jan St.Jean | Beavertail | Jamestown | 01-Jan-2010 |
| Phil Budlong | Beavertail SP | Jamestown | 01-Jan-2010 |
| Carlos Pedro | Beavertail | Jamestown | 01-Jan-2010 |