A rather nondescript medium-sized wren found from eastern Panama throughout much of lowland South America. Warm medium-brown upperparts with dark barring on wings and tail. Pale whitish cheek and throat that fades into richer buffy belly. Also note obvious white eyebrow. Pairs are found in the lower levels of lowland forest, secondary woodland, and riparian areas. Most easily detected by rich song, given as a duet. Usually combines high-pitched notes with fast lower warbles.