The Olive-backed Woodpecker Dinopium rafflesii has been found to be fairly closely related to members of the genus Gecinulus (Shakya et al. 2017). Though differing in some aspects of plumage it is similar in vocalizations and is now placed within that genus as Gecinulus rafflesii.
Clements, J. F., P. C. Rasmussen, T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, A. Spencer, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2023. The eBird/Clements checklist of Birds of the World: v2023. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ (連結)
