Harlequin Duck has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| John Bean | Beavertail | Jamestown | Newport | 12-Feb-2021 |
| John Magill | Beavertail Pt | Jamestown | Newport | 25-Jan-2021 |
| David Gregg | Beavertail | Jamestown | Newport | 18-Jan-2021 |
| Jen Leitao | Deep Hole | South Kingstown | Washington | 10-Jan-2021 |
| Sue Palmer | Camp Cronin | South Kingstown | Washington | 08-Jan-2021 |
| Wayne Munns | Narra Bay Winter Waterfowl Survey (Jamestown) | Jamestown | Newport | 05-Jan-2021 |
| Carlos Pedro | Sachuest | Middletown | Newport | 04-Jan-2021 |
| Barbara Sherman | Beavertail SP | Jamestown | Newport | 03-Jan-2021 |
| Jess Bishop | Sachuest | Middletown | Newport | 03-Jan-2021 |
| Jan St.Jean | Sachuesf Point | Middletown | Newport | 03-Jan-2021 |
| Don Heitzmann | Sachuest | Middletown | Newport | 03-Jan-2021 |
| Dick & Marge Bradley | Beavertail | Jamestown | Newport | 01-Jan-2021 |
| Paul L'Etoile | Jamestown | Newport | 01-Jan-2021 | |
| Dianne Auld | Beavertail | Jamestown | Newport | 01-Jan-2021 |