Rusty-winged Barbtail

The rusty-winged barbtail is 13 to 14.5 cm (5.1 to 5.7 in) long and weighs 13 to 17 g (0.46 to 0.60 oz). The sexes' plumages are alike. Adults of the nominate subspecies have a pale buffish or brownish buff supercilium and a dark brown stripe behind the eye; the rest of their face is streaked brown and buff. Their crown is dark olive-brown with a faint scallop pattern. The sides of their neck and upper back are brownish with pale buff spots, their lower back is browner and unspotted, their rump is brown with a faint rufescent tinge, and their uppertail coverts are chestnut. Voice: The rusty-winged barbtail is seldom vocal. What is thought to be its song is a fast, accelerating, "'tsi-tsi-tsi-si-si-sisisisisisi". Its call is described as a sharp "tseep" or "tsip" that sometimes runs into a series.