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. == Taxonomy and systematics == The streak-backed tit-spinetail has three subspecies, the nominate L. s. striata (Philippi & Landbeck, 1863), L. s. superciliaris (Hellmayr, 1932), and L. s. albigularis (Morrison, ARG, 1938). == Description == 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…