Progne chalybea (MPR): occurs from Mexico to northern Argentina and exhibits a migratory pattern in the south part of its distribution (Turner, 2004), where it is represented by the subspecies P. c. macrorhamphus (Grantsau, 2010). It begins nesting in RJ and MT in August-September, and departs from southern and central Brazil in the fall (March-May), when it migrates to the north of the continent, where there is a resident Amazonian population (P.c.chalybea). Large flocks have been recorded in ES (February), AM (July) and MT (October) (Sick, 1997). In RS, it breeds from October to December (Belton,1985; Maurício et al., 2013; WikiAves, 2016) where it is considered migratory (Accordi & Hartz, 2013). According to photographic records, there is also evidence of breeding activity in the Amazon and in the Southeast and South regions. In addition, it is present in SP, PR, SC and RS all year round (WikiAves, 2016), which suggests a need for further studies to confirm if only part of its population is migratory.

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