Chilean Elaenia

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breeds mainly in southern Argentina and Chile in Patagonia (Capllonch et al., 2011), but it can also be further north in Chile, for instance in the Fray Jorge Reserve (Pyle et al., 2015). It migrates north during austral winter, at least in part through the Brazilian coast, but it also seems to fly along the east slope of the Andes (Marini & Cavalcanti, 1990), reaching northeastern and northern Brazil (Amazon Basin included), Peru, and possibly Colombia, respectively (Hosner, 2016). In Bolivia there are records during the breeding season, but they are probably related to late migrants (Hosner, 2016). The migration southwards seems to follow a diffuse route from the Amazon to Central Brazil (Marini & Cavalcanti, 1990). West-central Argentina (e. g., Mendoza and San Juan Provinces) also seems to be part of a spring migration route to Patagonia (Cueto et al., 2016), and this species reaches its breeding sites in Patagonia in mid-October (Brown et al., 2007). Geolocation data (Jiménez et al., 2016) suggested that three individuals banded on Navarino Island in Tierra del Fuego migrated north at the end of February along the eastern coast of South America, stopped for around 10 days on the eastern coast of Brazil, before flying west to wintering grounds in east-central Amazonia, where they arrived between late April and early June. They departed from this site between late September and late October and arrived back at the breeding site between late November and early December (Jiménez et al., 2016). In Brazil, vocal records and collected specimens corroborate this pattern to the Amazon region (WikiAves, 2016; MPEG). In northeastern Brazil, records include data from the literature and are from February to July (WikiAves, 2016; Ruiz-Esparza et al., 2011; MPEG). In southeastern and southern Brazil, records are centered in February and May (Pacheco & Gonzaga, 1994; WikiAves, 2016; MZUSP).