Despite its broad distribution in South America, the Masked Gnatcatcher has little geographic overlap with other species of Polioptila. It often is a common bird in a variety of dry forest types. A subspecies of eastern Bolivia and central Brazil, berlepschi, is much paler than other populations of Masked Gnatcatcher, the male has a smaller black "mask" on the face; some authors believe that it may represent a separate species (Ridgely and Tudor 1989).
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thumbnail image: Reserva Ecológica "Ciudad Universitaria UNL," Santa Fe, Argentina © Gustavo Durán