Grey-backed Hawk Pseudastur occidentalis


Athanas, N.; Greenfield, P. 2016. Birds of Western Ecuador: A Photographic Guide. Princeton University Press, Princeton NJ, USA.

Best, B. J.; Kessler, M. 1995. Biodiversity and conservation in Tumbesian Ecuador and Peru. BirdLife International, Cambridge, U.K.

Cárdenas, A. 2007. Análisis multitemporal de cobertura vegetal y uso del suelo para la Ventana Binacional Ecuador, período 1998 - 2007, Proyecto Diseño del SIMSA - CCCM.

Collar, N. J.; Gonzaga, L. P.; Krabbe, N.; Madroño Nieto, A.; Naranjo, L. G.; Parker, T. A.; Wege, D. C. 1992. Threatened birds of the Americas: the ICBP/IUCN Red Data Book. International Council for Bird Preservation, Cambridge, U.K.

Coopmans, P.; Moore, J. V.; Krabbe, N.; Jahn, O.; Berg, K. S.; Lysinger, M.; Navarrete, L.; Ridgely, R. S. 2004. The birds of southwest Ecuador. John V. Moore Nature Recordings, San Jose, USA.

Freile, J. F.; Santander, T. 2005. Verde-Onzole-Canandé (EC2005). In: BirdLife International/Conservation International (ed.), Áreas importantes para la conservación de las aves en los Andes tropicales: sitios prioritarios para la conservación de la biodiversidad, pp. 303-305. BirdLife International, Quito.

Parker, T. A.; Carr, J. L. 1992. Status of forest remnants in the Cordillera de la Costa and adjacent areas of southwestern Ecuador (Rapid Assessment Program). Conservation International, Washington, D.C.

Piana, R. P. 2016. Potential distribution, absolute density, and population size of Gray?backed Hawks (Pseudastur occidentalis) in a protected area in northwest Peru. Journal of Field Ornithology 87(2): 133-142.

Piana, R.; Marsden, S. 2012. Diversity, community structure and niche characteristics within a diurnal raptor assemblage of northwestern Peru. The Condor 114(2): 279-289.

Vargas, H. 1995. Food habits, breeding biology and status of the Gray-backed Hawk (Leucopternis occidentalis) in western Ecuador. MSc thesis. Boise State University.

Walker, B. 2002. Observations from the Tumbes Reserved Zone, dpto. Tumbes, with notes on some new taxa for Peru and a checklist of the area. Cotinga 18: 37-43.

Further resources

Detailed species account from the Threatened birds of the Americas: the BirdLife International Red Data Book (BirdLife International 1992). Please note, taxonomic treatment and IUCN Red List category may have changed since publication.

Recuento detallado de la especie tomado del libro Aves Amenazadas de las Americas, Libro Rojo de BirdLife International (BirdLife International 1992). Nota: la taxonomoía y la categoría de la Lista Roja de la UICN pudo haber cambiado desde esta publicación.

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Recommended citation
BirdLife International (2022) Species factsheet: Pseudastur occidentalis. Downloaded from http://www.birdlife.org on 09/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 09/12/2022.