Gray-bellied Shrike-Tyrant

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occurs from southern Bolivia to Santa Cruz Province in Argentina and breeds in the steppes and prairies from southern Peru to the province of Santa Cruz. Populations from the south of its distribution are represented by the nominate subspecies and are migratory. It departs from its breeding areas at the end of the summer in February and migrates north to spend the austral fall and winter in southern Bolivia, Paraguay, Uruguay and part of northern Argentina. It is rare in Paraguay and Uruguay (Farnsworth et al., 2016). In Brazil, the first documented record was obtained for extreme western RS in September 2012. Although this species may be a regular migrant of low density in Brazil (Bellagamba et al., 2014), here it is considered vagrant due to a lack of data that corroborates this hypothesis and to the fact that there is only one record in Brazil.