East Amazonian Fire-eye Pyriglena leuconota

Rather long-tailed antbird of humid forest understory in lowlands and mountains in eastern Brazil. Usually stays hidden in dense vegetation and thickets, sometimes attending army antswarms. Male is black; female is rufous-brown above and paler tawny below. Both sexes have ruby-red eyes and a white patch on the back that is usually hidden; it is exposed when the bird is excited such as when defending its territory. Song is a very fast series of short whistles.