The Plain Softtail is found locally in Amazonia in southern Ecuador, Peru, Bolivia and eastern Brazil. The Plain Softtail is mostly olive brown with an indistinct superciliary and frontlet and rufous wings and tail. Females are paler than males on the brow and foreneck. This drab and uniform looking furnariid is most often encountered in pairs or small groups in vine tangles or thick vegetation at the borders of humid forest. These birds rarely join mixed flocks and are most often encountered in the middle level of the forest.