1. Hilty, S. L., and W. L. Brown (1986). A Guide to the Birds of Colombia. Princeton University Press, Princeton, New Jersey, USA.
2. Oliveros-Salas, H., E. Botero‐Delgadillo, and C. Olaciregu. (2016). Pyrrhura viridicata. In Book of the birds of Colombia, Volume II: Open, dry, insular, aquatic and marine ecosystems, highlands from Darién and Sierra Nevada de Santa Marta, and humid forests of central, northern and eastern Colombia. (L. M. Renjifo, A. M. Amaya-Villarreal, J. Burbano-Girón, & J. Velásquez-Tibatá, Editors). Editorial Pontificia Universidad Javeriana and Instituto Alexander von Humboldt., Bogotá, Colombia.
3. Whitney, B. M. (1996). Flight behaviour and other field characteristics of the genera of Neotropical parrots. Cotinga 5:32–42.
4. Pyle, P. (2013). Evolutionary implications of synapomorphic wing-molt sequences among falcons (Falconiformes) and parrots (Psittaciformes). Condor 115(3):593–602.
5. Jobling, J. A. (2010). Helm Dictionary of Scientific Bird Names. A. & C. Black, London, UK.