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Range DescriptionPolioptila lactea occurs in the lowland Atlantic Forest (up to 500 m) of south-east Brazil (Rio de Janeiro, So Paulo, Paran, south Mato Grosso do Sul, north Rio Grande do Sul), north-east Argentina (Misiones, Corrientes) and east Paraguay (Canindey south to Itapa) (Ridgely and Tudor 1989). It is found mainly in the Paran basin, where it is most common in south-east Paraguay (Lowen et al. 1996), and locally in Argentina (J.C.Chebez and J.Mazar Barnett in litt. 1999). However, it is now very rare across much of its historical range. There have been no records from So Paulo since 1905 (Willis and Oniki 1993) and, in south-east Brazil, it is only regularly found at a handful of sites (Tobias et al. 1993).