Streak-backed tit-spinetail

The streak-backed tit-spinetail, or streaked tit-spinetail, (Leptasthenura striata) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Chile and Peru.

The streak-backed tit-spinetail is 14.5 to 16.5 cm (5.7 to 6.5 in) long and weighs about 8.5 to 10.5 g (0.30 to 0.37 oz). It is a small-bodied, long-tailed furnariid with a short bill. The sexes have the same plumage. Adults of the nominate subspecies have an indistinct dirty white supercilium on an otherwise blackish and whitish streaked face. Their crown is black and heavily striped with rufous. Their back is streaked with dusky brown and tawny buff that diminish to the mostly plain olive brown rump. Their wing coverts are blackish with wide cinnamon rufous edges. Their flight feathers are dusky brown with cinnamon rufous bases that show as a patch on the closed wing. Their tail's central pair of feathers are dusky brown with much pale gray-brown, the next two pairs mostly dusky brown, and the rest dusky brown with progressively more pale gray-brown at their ends to the outermost, which are almost entirely pale. The feathers have bare shafts on their tips giving a spiny appearance. Their throat is white with some dusky spots and their breast and belly are grayish white with obscure whitish streaks. Their iris is brown, their bill black with a yellow base to the mandible, and their legs and feet black. Juveniles have a nearly plain gray-brown crown, dark scallop marks on the breast, and more rufous on the wings than adults. Subspecies L. s. superciliaris has a cinnamon-rufous crown, nearly white streaks on the back and wing coverts, and paler and less gray underparts than the nominate. L. s. albigularis is similar to superciliaris but with an unspotted pure white throat.