|Masked Gnatcatcher (Polioptila dumicola)|
The Masked Gnatcatcher is found from south-east Pará to northern Argentina where it inhabits light woodland, gallery woodland and scrub such as the chaco where it is quite common.
|The nominate sub-species is blue-grey above and a lighter grey below with blackish wings edged white. The tail is black with white outer feathers. The male, shown here in photos 2 and 3, has a black mask bordered below by a thin white line while the female, photo 4, has a much narrower black area, a white eyering and whitish cheeks and lores.|
|The first photo is a female of the subspecies P. d. berlepschi, a race which is paler grey above and almost white below while the male has a much narrower mask than the nominate race found further south. There is a possibility that two species may be involved.
There is an illustration in Ridgely & Tudor, Volume 1, Plate 4.