Elaenia chiriquensis (MPR): occurs from Costa Rica to eastern Brazil and northeastern Argentina. It is considered resident in most of its distribution (Hosner, 2004b), but some individuals migrate to breed (Jahn et al., 2004). The coexistence of migratory and resident populations hinders the identification of flyways (Marini & Cavalcanti, 1990). There seems to be a population quite common in Central Brazil between August and December that also breeds there and fly north during winter (Hosner, 2004b; Medeiros & Marini, 2007) and west to the Amazonian region (Sick, 1983, 1997; Marini & Cavalcanti, 1990). This migratory pattern is corroborated by an absence of records south of Brasília/DF and Cuiabá/MT between June and August (Marini & Cavalcanti, 1990). Nevertheless, a study using stable isotope analysis of tissues of individuals from this population reveals that individuals never leave the Cerrado for molting and wintering (Guaraldo et al., 2016). In addition, unpublished data from Charles G. Duca reports a quick passage of individuals through the coast of ES in February that were molting flight feathers,which suggests that the southeast coast of Brazil may be a stopover or molting ground for this species.

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 28, DOI: 10.11606/1807-0205/2018.58.03, http://zenodo.org/record/5234679