The curve-billed scythebill (Campylorhamphus procurvoides) is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae.

It is found in Brazil, Colombia, Ecuador, French Guyana, Guiana, Peru, Suriname, and Venezuela.

The International Ornithological Committee (IOC), BirdLife International's Handbook of the Birds of the World (HBW), and the Clements taxonomy assign it these three subspecies:[2][3][4] The South American Classification Committee of the American Ornithological Society adds three others, C. p. probatus, C. p. cardosoi, and C. p.

Adults of the nominate subspecies C. p. procurvoides have a dark brown head and neck with thin whitish to buffy streaks on them and the face.

Their flight feathers, rump, and tail ares rufous-chestnut that contrasts with the back.

Their underparts are dull brown with buffy-white arrow-shaped marks that become narrow streaks on the belly but don't continue onto the undertail coverts.

It greatly favors terra firme but occasionally occurs in floodplain forest.

It forages by gleaning and probing while hitching up and along trunks, branches, vines, and bamboo.

[7] The curve-billed scythebill's breeding season has not been fully defined but appears to include at least February to April.

That of the nominate is "an accelerating series...of 7–9 somewhat melancholy whistles on even pitch or falling slightly...'weeee, weé, wee, we, we, wew' or 'kuweee, kuwee, kwee, wee-wee-we-we-we.

[1] It is considered uncommon and patchily distributed in most of its range and is rare along its western edge in Colombia, Ecuador, and Peru.