1. 1. CHAPMAN, F. M. 1917. The distribution of bird-life in Colombia: a contribution to a biological survey of South America. Bulletin of the American Museum of Natural History, vol. 36.
2. 2. COLLAR, N. J., L. P. GONZAGA, N. KRABBE, A. MADROÑO NIETO, L. G., NARANJO, T. A. PARKER III & D. C. WEGE. 1992. Threatened Birds of the Americas. International Council for Bird Preservation, Cambridge, UK.
3. 3. CUERVO, A. M., F. G. STILES, C. D. CADENA, J. L., TORO & G. A. LONDOÑO, 2003. New and noteworthy bird records from the northern sector of the Western Andes of Colombia. Bulletin of the British Ornithologists' Club 123: 7-24.
4. 4. ECHEVERRY, E. H. 1986. Avifauna parcial, Parque "Las Orquídeas". INDERENA, Medellín.
5. 5. GRAVES, G. R. & D. URIBE RESTREPO. 1989. A new allopatric taxon in the Hapalopsittaca amazonina (Psittacidae) superspecies from Colombia. Wilson Bulletin 101:369-376.