Gaviota capucho gris - Chroicocephalus cirrocephalus
| Ord | Día | COA | Lugar | Ruta | Cantidad |
| 1 | 20250719 | RECS | Recs | 2 | 4 |
| 2 | 20250719 | RECS | Recs | 3 | 1 |
| 3 | 20240928 | RECS | Recs | 2 | 1 |
| 4 | 20230701 | RECS | Recs | 1 | 2 |
| 5 | 20230513 | RECS | Recs | 0 | 1 |
| 6 | 20230429 | RECS | Recs | 2 | 1 |
| 7 | 20221105 | RECS | Recs | 4 | 1 |
| 8 | 20220716 | RECS | Recs | 2 | 5 |
| 9 | 20200111 | RECS | Recs | 4 | 1 |
| 10 | 20200111 | RECS | Recs | 5 | 1 |
| 11 | 20180623 | RECS | Recs | 2 | 1 |
| 12 | 20170722 | RECS | Recs | 1 | 1 |
| 13 | 20170722 | RECS | Recs | 2 | 7 |
| 14 | 20160618 | RECS | Recs | 2 | 2 |
| 15 | 20160618 | RECS | Recs | 4 | 4 |
| 16 | 20150919 | RECS | Recs | 2 | 1 |
| 17 | 20150620 | RECS | Recs | 1 | 1 |
| 18 | 20150620 | RECS | Recs | 2 | 1 |
| 19 | 20150620 | RECS | Recs | 4 | 1 |
| 20 | 20150620 | RECS | Recs | 5 | 1 |
| 21 | 20140628 | RECS | Recs | 2 | 1 |
| 22 | 20130601 | RECS | Recs | 4 | 1 |
| 23 | 20130601 | RECS | Recs | 5 | 1 |
| La clasificación sistemática de las aves corresponde a la SACC, South American Classification Committee (www.museum.lsu.edu/~Remsen/SACCCountryLists.htm), que pertenece a la American Ornithologists' Union (www.americanornithology.org/) Se utiliza esta clasificación sistemática y los nombres en inglés que alli se designan. Los nombres en castellano son tomados de la "Guía de identificación de aves de Argentina y Uruguay" de Tito Narovsky y Darío Yzurieta (16va edición, 2010). |