Sporophila hypoxantha (MPR):occurs in eastern Bolivia, Paraguay, northeastern Argentina, Uruguay and Brazil (Grantsau, 2010). Four populations were recently identified based on vocalizations (dialects): two of them are resident, one is partially migratory, and another completely migratory. It moves between Corrientes and Entre Ríos in Argentina and southern Brazil, where it breeds from mid-October/November to March/April (Areta & Repenning, 2011). The movement pattern of this species in Brazil is not fully understood, but it is known that populations move to the north and center of its distribution (SP, MG, GO, MT and MS) after the breeding season, where they join other Sporophila species (Machado, 2009). This species has been observed in interspecific flocks together with their Amazonian and Central Brazilian congeners (Sick, 1997), and composing mixed flocks – mainly represented by Sporophila bouvreuil – foraging in pastures in the Araguaia River basin in southeastern PA in mid-September 2009, 2010 and 2013 (Cavarzere et al., 2015). The most northern limit of its wintering grounds is southeastern PA (Somenzari et al., 2011) and TO (Dornas et al., 2013). In PR, it performs migratory movements and there are more individuals during spring and summer, even though there are other resident individuals all year round in this state (Straube et al., 2004), as well as breeding populations.Banding data shows the species in SC from November to March, and in RS in December and January (SNA, 2016), but there is also evidence of breeding activity in April and November (Belton, 1985).