The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• 1995. Forest Resources Assessment 1990. Global Synthesis. FAO, Forestry Paper. (124).
• AOU; American Ornithologists' Union. 1998. Checklist of North American birds. Washington, D. C., E. U. A.
• American Ornithologists's Union. 1998. Check-List of North American Birds (The Species of Birds of North America from the Arctic through Panama, Including the West Indies and Hawaiian Islands). 7th. ed. Allen Press, Inc., Lawrence, Kansas, U.S.A.
• BirdLife International 2009. Trogon collaris
• Breedlove, D. E. 1981. Flora of Chiapas. Introduction to the flora of Chiapas. California Academy of Sciences. 1.
• Delgado, R.; R.G. Campos; J. Sánchez y Ch. Gómez. 1998. Lista de Aves de Costa Rica/ Checklist of Costa Rican Birds. ASOCIACION ORNITOLOGICA DE COSTA RICA. San José. Costa Rica. 28 p.
• Dickinson, Edward C., ed. 2003. The Howard and Moore Complete Checklist of the Birds of the World, 3rd edition. 1039
• Escalante-Pliego, P., Sada, A. M. y Robles-Gil, J. 1996. Listado de nombres comunes de las aves de México. Agrupación Sierra Madre S. C. México, D. F.
• Gill, Frank, and Minturn Wright. 2006. Birds of the World: Recommended English Names. ix + 259
• Hamilton, L. S., Juvik, J. O. y Scatena, F. N. 1995. Tropical montane cloud forests. Springer. Nueva York, E. U. A.
• Howell, S. N. G y Webb, S. 1995. A guide to the birds of Mexico and northern Central America. Oxford University Press. Nueva York, E. U. A.
• Johnsgard, P. A. 2000. Trogons and quetzals of the world. Smithsonian Institution Press. Washington, D. C., E. U. A.
• Lewis, T.J. & F.G. Stiles.1980. Locational checklist of the birds of Costa Rica. Costa Rica Expeditions. San José, Costa Rica.
• Masera, R. O., Ordóñez, M. J. y Dirzo, R. 1997. Carbon emissions from Mexican forests: current situation and long-term scenarios. Climate Change. 35 (3) : 265-295.
• Peterson, R. T. y Chalif, E. L. 1994. Aves de México. Guía de campo. Diana. México, D. F.
• Rzedowski, J. 1996. Análisis preliminar de la flora vascular de los bosques mesófilos de montaña de México. Acta Botánica Mexicana. (35) : 25-37.
• Sibley, C. G. y Ahlquist, J. E. 1990. Phylogeny and distribution and taxonomy of birds of the world. Michigan, E. U. A.
• Sibley, Ch. and B. Monroe, Jr. 1990. Distribution and Taxonomy of Birds of the World. Yale University Press. New Haven & London. 1111 p.
• Sisk, T.D.; Hellen Sparrow & J. Zook. 1992. Aves de la Zona Protectora Las Tablas, Reserva de la Biosfera La Amistad, Costa Rica. Tropical Conservation Biology, Stanford University. Stanford, U.S.A..
• Skutch, A. F. 1956. A nesting of the Collared Trogon. AUK. 73 (3) : 354-366.
• Skutch, A.F. 1956. A nesting of the Collared Trogon. The Auk 73: 354-366.
• Slud, P. 1960. The birds of Finca La Selva, Costa Rica: A tropical wet forest locality. Bulletin of the American Museum of Natural History 121(2): 146 p.
• Slud, P. 1964. The birds of Costa Rica: Distribution and Ecology. Bulletin of The American Museum of Natural History 128: 5-430
• Solórzano-Lujano, S., Castillo, S., Valverde, T. y Ávila-Hernández, M. L. 2000. Quetzal abundance in relation to fruit availability in a cloud forest in Southeastern Mexico. Biotropica. 32 (3) : 523-532.
• Stiles, F. G. 1977. Checklist of the birds of La Selva and vicinity. Universidad de Costa Rica. San José, Costa Rica. 12 p.
• Stiles, F. G. 1991. Forest Birds - Caribbean slope. s.d. 7 p. (manuscrito).
• Stiles, F.G. & A. F.Skutch. 1995. Guía de Aves de Costa Rica.Traducción al Español: Loretta Rosselli. Ilustrado por Dana Gardner. Instituto Nacional de Biodiversidad (INBio). Heredia, Costa Rica. 580 p.
• Stiles, F.G. 1978. Aves de la Cordillera Volcánica Central, con referencia al Volcán Barva. Departamento de Pesca Continental y Vida Silvestre, Dirección General de Recursos Pequeros y Vida Silvestre, Ministerio de Agricultura y Ganadería. 2 p.
• Stiles, F.G. 1983. Checklist of birds. Pp. 530-544, In: D. H. Janzen (ed.). Costa Rican Natural History. University of Chicago Press, Chicago.
• Stiles, F.G. 1985. Conservation of forest birds in Costa Rica: Problems and perspectives. ICBP Technical Publication 4: 141-168.
• Stiles, F.G. 1991. Lista preliminar de la avifauna de la Reserva Forestal de San Ramón. Pp. 73-78, In: R. Ortiz (ed.). Memoria de Investigación, Reserva Forestal de San Ramón. Oficina de Publicaciones, Sede de Occidente, Universidad de Costa Rica.
• Stotz, D. F., Fitzpatrick, W. J., Parker III, A. T. y Moskovits, D. K. 1996. Neotropical birds. Ecology and conservation. University of Chicago Press. E. U. A.