Anas sibilatrix (MGT): endemic to South America, breeding in southern Argentina, central Chile and on the Malvinas/Falkland Islands (Chesser, 1994; Sick, 1997). Populations that breed in the southern part of the distribution migrate to lower latitudes during austral winter and reach southern Brazil (Carboneras, 1992a). In Brazil, there are records of few individuals, which suggest that it is a marginal population that possibly represents less than 1% of the global population (ARA, 2016). For Rio Grande do Sul (RS) there are records in June and August (Maurício & Dias, 1996) and isolated records in October, February and July (Belton, 1984). Photographic records are restricted to September and October for RS and to September for São Paulo (SP) (WikiAves, 2016).

Published as part of Somenzari, Marina, Amaral, Priscilla Prudente do, Cueto, Víctor R., Guaraldo, André de Camargo, Jahn, Alex E., Lima, Diego Mendes, Lima, Pedro Cerqueira, Lugarini, Camile, Machado, Caio Graco, Martinez, Jaime, Nascimento, João Luiz Xavier do, Pacheco, José Fernando, Paludo, Danielle, Prestes, Nêmora Pauletti, Serafini, Patrícia Pereira, Silveira, Luís Fábio, Sousa, Antônio Emanuel Barreto Alves de, Sousa, Nathália Alves de, Souza, Manuella Andrade de, Telino-Júnior, Wallace Rodrigues & Whitne, Bret Myers, 2018, An overview of migratory birds in Brazil, pp. 1-66 in Papéis Avulsos de Zoologia 58 on page 3, DOI: 10.11606/1807-0205/2018.58.03, http://zenodo.org/record/5234679