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

References

  • 1996. database, NODC Taxonomic Code
  • 2011. IOC World Bird List, Master List v2.9
  • 2011. AOU Check-List (08-2011)
  • 2011. Zoonomen - Zoological Nomenclature Resource, 2011.02.25
  • BBL - Longevity Records of North American Birds (Online source)   http://www.pwrc.usgs.gov/BBL/homepage/longvrec.htm External link.
  • Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
  • Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
  • Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166
  • Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79
  • BirdLife International 2012. Buteo regalis
  • Clark, W. 1987. A Field Guide to Hawks North America. Boston, New York: Houghton Mifflin Company.
  • Ehrich, P., D. Dobkin, D. Wheye. 1988. The Birder's Handbook. New York, London, Toronto, Sydney, Tokyo, Singaporsingapor: Simon & Schuster inc..
  • Gill, Frank, and Minturn Wright. 2006. Birds of the World: Recommended English Names
  • Gill, Frank, and Minturn Wright. 2006. Birds of the World: Recommended English Names. ix + 259
  • Leary W. Alan, , Mazaika RoseMary, Bechard J. Marc. 1998. Factors Affecting the Size of Ferruginous Hawks. The Wilson Bulletin: 198-205.
  • Malick L. Donald, 1989. Field Guide to the Birds of North America. Washington, D.C.: National Geographic.
  • Orrell T. (custodian) (2013). ITIS Global: The Integrated Taxonomic Information System (version Sept 12). In: Species 2000 & ITIS Catalogue of Life, 11th March 2013 (Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A., eds). Digital resource at www.catalogueoflife.org/col/. Species 2000: Reading, UK.
  • Zeiner C.Zeiner, , Laudenslayer, F. William, Mayer E Kenneth, White Marshall. November, 1990. California's Wildlife Volume 2 Birds. Sacramento, California: Department of Fish and Game.
  • del Hoyo, J., A. Elliott, J. Sargatal. 1994. Handbook of the Birds of the World V. 2 New World Vultures to Guineafowl. Barcelona: Lynx Edicions.

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