ノドグロヒメアリサザイ Epinecrophylla ornata

Geographically variable antwren. Males are gray with a clean black throat patch and white wing spots; females are browner with cream wing spots. Females in the western part of the range have black-and-white mottling on the throat; those in the east have unmarked throats. In some populations, both sexes have a reddish patch on the back. Occupies dense viny habitats and forages in the under- and midstory; in areas with bamboo, often largely restricted to bamboo patches. Song is a quick descending series of high, sharp notes.