Yapacana Antbird

The Yapacana antbird is 13 to 13.5 cm (5.1 to 5.3 in) long and weighs 14 to 15 g (0.49 to 0.53 oz). Adult males have a mostly gray face. Their crown, neck, back, and rump are dark gray with a white patch between the shoulders. Their tail is blackish gray. Their wings are blackish gray with narrow white tips on the flight feathers and wing coverts. Their underparts are white with a light gray tinge on the breast, flanks, and crissum. Adult females have upperparts like the male's but without the white tips on the flight feathers and wing coverts. Voice: The Yapacana antbird's song is a "curious, rapid sequence of 1 or 2 almost toneless, rising gratings, immediately followed by very high 'pipip' or 'pi', the total as 'grrrrr-pipip-grrrrr-pi' ". Its calls include a "single long harsh note at higher pitch" than the song, an "abrupt 'squip' ", and a "soft rattle".