Viudita blanca - Fluvicola albiventer
| Ord | Día | COA | Lugar | Ruta | Cantidad |
| 1 | 20240928 | RECS | Recs | 1 | 1 |
| 2 | 20240928 | RECS | Recs | 3 | 1 |
| 3 | 20211106 | RECS | Recs | 1 | 2 |
| 4 | 20200111 | RECS | Recs | 1 | 1 |
| 5 | 20191123 | RECS | Recs | 0 | 2 |
| 6 | 20190928 | RECS | Recs | 3 | 1 |
| 7 | 20190928 | RECS | Recs | 4 | 1 |
| 8 | 20190323 | RECS | Recs | 1 | 2 |
| 9 | 20181215 | RECS | Recs | 2 | 3 |
| 10 | 20181215 | RECS | Recs | 3 | 1 |
| 11 | 20181215 | RECS | Recs | 4 | 1 |
| 12 | 20181013 | RECS | Recs | 1 | 1 |
| 13 | 20181013 | RECS | Recs | 3 | 1 |
| 14 | 20181006 | RECS | Recs | 1 | 4 |
| 15 | 20181006 | RECS | Recs | 2 | 1 |
| 16 | 20180210 | RECS | Recs | 1 | 1 |
| 17 | 20171216 | RECS | Recs | 1 | 2 |
| 18 | 20171216 | RECS | Recs | 3 | 1 |
| 19 | 20160924 | RECS | Recs | 1 | 1 |
| 20 | 20160220 | RECS | Recs | 3 | 1 |
| 21 | 20160213 | RECS | Recs | 1 | 1 |
| 22 | 20160102 | RECS | Recs | 0 | 1 |
| 23 | 20151219 | RECS | Recs | 1 | 2 |
| 24 | 20141220 | RECS | Recs | 1 | 1 |
| 25 | 20141220 | RECS | Recs | 3 | 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). |