An overview of migratory birds in Brazil Author Somenzari, Marina Author Amaral, Priscilla Prudente do Author Cueto, Víctor R. Author Guaraldo, André de Camargo Author Jahn, Alex E. Author Lima, Diego Mendes Author Lima, Pedro Cerqueira Author Lugarini, Camile Author Machado, Caio Graco Author Martinez, Jaime Author Nascimento, João Luiz Xavier do Author Pacheco, José Fernando Author Paludo, Danielle Author Prestes, Nêmora Pauletti Author Serafini, Patrícia Pereira Author Silveira, Luís Fábio Author Sousa, Antônio Emanuel Barreto Alves de Author Sousa, Nathália Alves de Author Souza, Manuella Andrade de Author Telino-Júnior, Wallace Rodrigues Author Whitney, Bret Myers text Papéis Avulsos de Zoologia 2018 2018-02-20 58 1 66 http://dx.doi.org/10.11606/1807-0205/2018.58.03 journal article 10.11606/1807-0205/2018.58.03 1807-0205 5234679 Laridae Leucophaeus atricilla (MGT) : breeds in northern USA and southern Canada and migrates to South America. It overwinters from Mexico to southern Peru on the Pacific coast and from North Carolina to Brazil on the Atlantic coast ( Burger et al., 2016 ). In Brazil , it occurs from the mouth of the Amazon River to the bay of São Marcos/ MA ( Antas, 1987 ) Although its typical distribution on the Brazilian coast is in AP, PA and MA, there are also records for AM, CE, RJ, SP ( Lima et al., 2010 ) and Trindade Island ( Dias et al., 2010a ). In the Amazonian region, records are for AP from August to April and for PA from September to July ( Valente, 2011 ; Xavier & Boss, 2011 ; WikiAves, 2016; MPEG). In the Northeast region, it occurs in MA in almost every month of the year ( Rodrigues & Carvalho, 2011b ; WikiAves, 2016) and in CE,PI, RN and BA from September to May ( Albano & Girão, 2011 ; Girão & Albano, 2011a , b; WikiAves, 2016), but there are also records of what probably are juveniles for CE and RN in July (WikiAves, 2016). For RJ and SP, there are few records in January, April and November (WikiAves, 2016) and for RS, the species was recorded in January and July ( Sick, 1997 ;WikiAves, 2016). Larus atlanticus (MGT) : occurs from southeastern Uruguay to Argentina , where it breeds ( Grantsau, 2010 ). An estimated number of 150 individuals overwinter annually in RS and they occupy sparsely the oceanic coast and the estuary from Lagoa dos Patos, where at most 50 individuals occur regularly between April and August (FZ- BRS, 2013). Although records are centered in the period between April and August, there are occasional records from September to November, February and March (WikiAves, 2016). The species also occurs in SC ( Burger et al., 2016 ) in June and August (WikiAves, 2016) and PR in April and June ( Pacheco et al., 2009 ; WikiAves, 2016).