Threskiornithidae, Poche, 1904

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 & Whitney, Bret Myers, 2018, An overview of migratory birds in Brazil, Papéis Avulsos de Zoologia 58, pp. 1-66 : 25

Threskiornithidae

Plegadis chihi (MPR) : occurs from central California and northwestern USA to the coast of Mexico, and in southern central South America from southeastern Bolivia, Paraguay and southern Brazil to Uruguay and northern central Chile and Argentina (Matheu & del Hoyo, 1992). In Brazil,it seems to breed only in RS and there is a record of 12,000 pairs in the Taim Ecological Station ( Belton, 1984), where there are also records all year round, as well as in SC (P.P. Serafini, pers.obs.), PR and SP (WikiAves, 2016). However, banding and recapture data proves that this species migrates between Argentina and RS, and records for Argentina are centered in the period between January and April and for RS between June and December ( Olrog, 1971; Belton, 1984; SNA, 2016).

Platalea ajaja (MPR) : occurs from southeastern USA to northern Argentina, and there are records in all of Brazil. It is considered sedentary in most of its global distribution, but it is partially migratory in North America and its movements in South America are little known (Matheu & Del Hoyo, 1992). In Brazil, it breeds in RS (September to December), where it is present throughout the year ( Belton, 1994), and also in the Pantanal according to banding data (SNA, 2016). Nestlings and juveniles band- ed in RS were recovered in SC, SP, MG and RJ ( Nunes & Tomas, 2008). This species was classified as partially migratory due to the fact that breeding data is restricted to RS and Pantanal, which suggests that this species returns to these places to breed.