Streak-capped Spinetail

The streak-capped spinetail is 14 to 15 cm (5.5 to 5.9 in) long and weighs 14 to 16 g (0.49 to 0.56 oz). The sexes have the same plumage. Adults have a narrow whitish supercilium on an otherwise dark brownish and buff face. Their crown is reddish chestnut with blackish streaks, their back brown that becomes paler by the rump, and tawny rufescent uppertail coverts. Their wings are mostly reddish chestnut; their flight feathers have slightly duller edges and dark fuscous tips. Their tail is reddish chestnut; it is graduated and the feathers have pointed tips. Voice: The streak-capped spinetail's vocalizations have not been fully determined. What is either its song or call is described as "a weak, high-pitched, squeaky trill, 'ti, ti, t, t-t-t-t' " and a "shrill, squeaky trill, accelerating".