Chapman's Bristle Tyrant

Chapman's bristle tyrant is about 12 cm (4.7 in) long and weighs 7 to 8 g (0.25 to 0.28 oz). The sexes have the same plumage. Adults of the nominate subspecies have a whitish supercilium and a white eye-ring on an otherwise gray and white grizzled face. A black line through the eye continues as a crescent behind the ear coverts. Their crown, back, and rump are dull olive; the crown is slightly darker. Their wings are dusky with pale buffy yellow to buffy white edges on the flight feathers. Their wing coverts are dusky with wide buff tips that show as two conspicuous wing bars. Voice: As of late 2024 xeno-canto had only three recordings of Chapman's bristle tyrant vocalizations. The Cornell Lab's Macaulay Library had several. The species' vocalizations have not been described.