Black-tailed Antbird

The black-tailed antbird is 12 to 13 cm (4.7 to 5.1 in) long and weighs an average of about 18 g (0.63 oz). Adult males are mostly very dark gray. Their head, neck, throat, and wing coverts are blackish; the coverts have narrow white tips. Some individuals have a white patch between their scapulars. Adult females have a dull reddish brown crown. Their back and rump are medium brown. Their flight feathers are dusky brown and their wing coverts black with narrow white edges. Their tail feathers are dusky with medium brown edges. Their lores and face are gray. Voice: The black-tailed antbird's song is "a moderately paced (4–10 notes/sec), obviously accelerating, descending series of slightly burry notes: djee DJEE-djee-djee-djee-djee'dje'dje'djedjedjr". Its call is "a sharp tchew note" that is sometimes doubled.