Cave Swallow has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Carlos Pedro | Napatree | Westerly | Washington | 09-Nov-2013 |
| Kellen Rosburg | Napatree Point | Westerly | Washington | 09-Nov-2013 |
| Wayne Munns | Napatree | Westerly | Washington | 09-Nov-2013 |
| Barbara Sherman | Napatree Pt | Westerly | Washington | 09-Nov-2013 |