The scaly-breasted woodpecker (Celeus undatus grammicus), also known as the scale-breasted woodpecker, is a subspecies of bird in subfamily Picinae of the woodpecker family Picidae. Some taxonomists consider it a separate species. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela.[2][3][4]
^Gill, F.; Donsker, D.; Rasmussen, P., eds. (July 2023). "Woodpeckers". IOC World Bird List. v 13.2. Retrieved July 31, 2023.
^Clements, J. F., T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2022. The eBird/Clements checklist of birds of the world: v2022. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ retrieved November 10, 2022
^Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, G. Del-Rio, A. Jaramillo, D. F. Lane, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 31 May 2023. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved May 31, 2023