A strikingly-patterned medium-sized bird of palm swamps. Bright rufous upperparts and tail contrast with black-and-white streaked head and underparts. Found only in Moriche palm stands at rainforest edge or in swampy savanna regions. Usually in pairs that masterfully evade detection by slinking through the leaves and bases of palm fronds, which are probed for insect prey. Does not join mixed-species flocks. Best detected by voice: distinctive song is a rapid series of piping whistles, dropping slightly in pitch at end. Plumage pattern is similar to many woodcreepers, but none have such bold streaking, and most are unlikely to be found in Moriche palm stands.