Cabanis's spinetail

Cabanis's spinetail (Synallaxis cabanisi) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Brazil, Bolivia, and Peru.

Cabanis's spinetail is 16 to 18 cm (6.3 to 7.1 in) long and weighs 16 to 24 g (0.56 to 0.85 oz). The sexes have the same plumage. Adults of the nominate subspecies have a faint ochraceous chestnut streak behind the eye and a grayish white malar region on an otherwise sooty gray-brown face. Their crown and nape are dark rufous-chestnut; their back, rump and uppertail coverts are dark brown. Their wings are mostly rufous-chestnut with fuscous brown tips on the flight feathers. Their tail is dull chestnut.It is graduated and the feathers have pointed tips. Their chin and sides of their throat are brownish-gray; the central throat feathers are blackish with grayish edges. Their underparts are mostly brownish gray with a slightly paler belly and a faint brown tinge on the flanks. Their iris is reddish-brown to brown, their maxilla is black, their mandible silver to gray (sometimes with a blackish tip), and their legs and feet are olive-gray to yellowish-gray. Juveniles have a sooty gray-brown crown and nape and more grayish underparts than the nominate. Subspecies S. c. fulviventris is smaller than the nominate, with a whiter throat and much paler underparts; their breast is tawny-olive and the center of their belly is buff.