Great Black-backed Gull has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Kellen Rosburg | Wesquage Pond | Narragansett | Washington | 10-Jul-2013 |
| Patrick | East Matunuck | Charlestown | Washington | 29-Jun-2013 |
| Cathy Gim | Middletown | Newport | 17-Jan-2013 | |
| Janaehesser | Turner Reservoir | East Providence | Providence | 11-Jan-2013 |
| Kari McDonald | Galilee | Narragansett | Washington | 06-Jan-2013 |
| DAVID WALLIS | Gallilee | South Kingstown | Washington | 05-Jan-2013 |
| John Shamgochian | Water St. | East Providence | Providence | 04-Jan-2013 |
| Ben Shamgochian | RT. 146 | North Providence | Providence | 03-Jan-2013 |
| John Balletto | Seekonk River | Providence | Providence | 02-Jan-2013 |
| drew wheelan | camp cronin | Narragansett | Washington | 02-Jan-2013 |
| Barbara Sherman | Scarborough | Narragansett | Washington | 01-Jan-2013 |
| Carlos Pedro | East each | Charlestown | Washington | 01-Jan-2013 |
| Jan St.Jean | Point Judith | Narragansett | Washington | 01-Jan-2013 |
| Paul L'Etoile | Scarborough Beach | Narragansett | Washington | 01-Jan-2013 |
| John Magill | East Beach | Charlestown | Washington | 01-Jan-2013 |
| Greg Sargeant | Seekonk River | Providence | Providence | 01-Jan-2013 |
| Phil Budlong | Jamestown-Verrazzano Bridge | North Kingstown | Washington | 01-Jan-2013 |
| Jen Scranton | Tiogue Lake | Coventry | Kent | 01-Jan-2013 |
| Ryan Kleinert | Tiogue Lake | Coventry | Kent | 01-Jan-2013 |
| Wayne Munns | East Beach | Charlestown | Washington | 01-Jan-2013 |
| Kevin Rogers | East Beach, Charlestown | Charlestown | Washington | 01-Jan-2013 |