This species is found only in the Atlantic rainforest and its surroundings in southern Brazil, eastern Paraguay, Uruguay and northern Argentina. The Swedish name "Grey-breasted forest songbird" probably fits the color variants in the north well, but here, in the southern part of the range, as you can see in the picture, "Blue-breasted" would have been better. The English name ('White-browed warbler') probably comes from the brilliant, white eye ring. The bird belongs to the large, exclusively American, family of forest warblers (Parulidae) which includes 110 species from Canada to Argentina. Most are insectivorous all year round, but some switch to a fruit and berry diet in winter. The White-browed warbler is most often found in dense forest areas, preferably near water. There it searches for insects in the undergrowth.