The Speckled Chachalaca was split into four species: the Speckled Chachalaca in Amazonia, the Colombian Chachalaca in the Magdalena valley of Colombia, the Scaled Chachalaca in southeast Brazil, and the East Brazilian Chachalaca in east Brazil.
Range data provided by Infonatura/Natureserve and BirdPhotos.com.
Ridgely, R. S., T. F. Allnutt, T. Brooks, D. K. McNicol, D. W. Mehlman, B. E. Young, and J. R. Zook. 2005. Digital Distribution Maps of the Birds of the Western Hemisphere, version 2.1. NatureServe, Arlington, Virginia, USA. Additional updates and changes by BirdPhotos.com 2016.