[1] However, BirdLife International's Handbook of the Birds of the World (HBW) treats uniformis and brigidai as subspecies of the red-billed woodcreeper (H.

[5] This article follows the two-subspecies model of H. u. uniformis (Hellmayr, 1909) and H. u. brigidai (da Silva, Novaes, & Oren 1995).

Adults of both subspecies have smoky brown to olive-brown upperparts with bright chestnut to rufous-chestnut wing coverts, flight feathers, rump, and tail.

[6][7] The nominate subspecies of the uniform woodcreeper is found in the Amazon Basin south of the Amazon River in Brazil between the Madeira and Xingu rivers and south to Mato Grosso state and northeastern Bolivia's Santa Cruz Department.

It mostly occurs at low elevations but reaches 600 m (2,000 ft) in Serra dos Carajás in Brazil's Pará state.

[6] The nominate subspecies' song is a "loud series of about 6 'Weeah weeah - - weeh' notes", and that of H. u. brigidai is similar.

[8] It is thought to be uncommon to rare across its range and "[a]ppears to be highly sensitive to habitat modification".