Black Guillemot has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Cathy Gim | Mansion Beach | New Shoreham | Washington | 22-Jan-2015 |
| Wayne Munns | North End | New Shoreham | Washington | 22-Jan-2015 |
| Jan St.Jean | Block Island Mansion Beach | New Shoreham | Washington | 22-Jan-2015 |