White-browed Antbird

The white-browed antbird is 12 to 13.5 cm (4.7 to 5.3 in) long and weighs 18 to 22 g (0.63 to 0.78 oz). Adult males of the nominate subspecies M. l. leucophrys have the eponymous white forehead and supercilium. They are otherwise mostly dark bluish gray that is darkest on their wings and tail and lightest on their crissum. Their face below the white, their chin, and their throat are black. Adult females have a cinnamon to yellow-buff forehead and supercilium. Their crown is olive-brown with a reddish tinge and the rest of their face is black. They have olive-brown upperparts. Voice: The male white-browed antbird's song is "a long (e.g. 4 seconds) trill typically increasing in intensity and pace initially, dropping slightly in pitch at end"; the female's is "shorter and often rising in pitch initially". The subspecies' songs differ greatly in their pace. The species' calls include a short whistle that varies geographically from clear to nasal or burry.