Мараньонская муравьеловка Percnostola arenarum

Scarce antbird described to science in 2001. It is found in lowland rainforest in northeastern Peru, only in areas with white, sandy soil. Male is gray with a black throat and white wingbars. Female has gray upperparts with tawny underparts and wingbars. Very similar to Black-headed Antbird, and best identified by voice, range, and habitat. Inhabits dense understory, often in areas with lots of palm saplings. Song is a fairly rapid series of ringing notes, higher-pitched and faster than the song of Black-headed Antbird.