White-plumed Antbird

The white-plumed antbird is 11.5 to 12.5 cm (4.5 to 4.9 in) and weighs 18 to 23 g (0.63 to 0.81 oz). The species is monomorphic, meaning both sexes look the same. Adults of both subspecies have the eponymous white tufts on their forehead and chin. Their crown and the rest of their face are black; the nominate subspecies has a white stripe over and behind the eye. Their upperparts and wings are gray. Their nape, tail, and underparts are rufous-chestnut with a gray tinge on the flanks. Their feet and tarsus are bright orange. Their bill is about 1.16 cm (0.46 in) long and 0.47 cm (0. Voice: This species has 11 different calls (described in detail by Willis (1981)), 8 of which are similar to another species (the Bicolored Antbird) and 3 that are fairly unusual. They have a loud, structurally complex and unique, whistling song. This song is used between mates and young separated by vegetation and individuals searching for ants.