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

References

• 1. UNEP-WCMC (November 2001) http://quin.unep-wcmc.org/
• 2. Hawk Conservancy www.hawk-conservancy.org
• 3. Battern, L. A., Bibby, C. J., Clement, P., Elliott, G. D. and Porter, R.F. (1990) Red Data Birds in Britain. T & A.D. Poyser, London.
• B., Bruun., & S. Baha El Din.   (1985).  Common Birds of Egypt, The American University in Cairo Press, Cairo..  
• BirdLife International 2009. Circus pygargus
• Gill, Frank, and Minturn Wright. 2006. Birds of the World: Recommended English Names. ix + 259
• Longevity Records: Life Spans of Mammals, Birds, Amphibians, Reptiles, and Fish (Online source)
• M., Tharwat.   (1997).  ‘Birds Known to occur in Egypt’, National Biodiversity Unit, no. 8, Egyptian Environmental Affairs Agency, Cairo..  
• R., Porter., & D. Cottridge.   (2000).  Birds of Egypt and the Middle East, The American University in Cairo Press, Cairo..  
• S., Baha El Din., J. Hobbs., W. Mullie., S. Goodman., & P. Meininger.   (1989).  The Birds of Egypt, Oxford University Press, New York..