Buteo regalis
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Radjy, S. 1994. Database of raptor nests on BLM lands with data from 1977-1994.
Hall, R. S., R.L. Glinski, D.H. Ellis, J.M. Ramakka, and D.L. Base. 1988. Ferruginous hawk. Pages 111-118 in Glinski et al., eds. Proc. Southwest Raptor Manage. Symp. and Workshop. Nat. Wildl. Fed. Sci. and Tech. Ser. No. 11.
Terres, J.K. 1980. The Audobon Society Encyclopedia of North American Birds. New York, Alfred A. Knopf.
White, C.M. and T.L. Thurow. 1985. Reproduction of Ferruginous hawks exposed to controlled disturbance. The Condor. 87:14-22.
Steenhof, K. 1984. Use of an interspecific communal roost by wintering Ferruginous hawks. The Wilson Bulletin. 96(1): 137-138.
Warkentin, I.G. and P.C. James. 1988. Trends in winter distribution and abundance of Ferruginous hawks. Journal of Field Ornithology. 59(3): 209-214.
Palmer, R.S. 1988. Handbook of North American Birds: Volume 5, family Accipitridae (concluded) and family Falconidae. Yale University Press.
Bechard, M. J., and J. K. Schmutz. 1995. Ferruginous Hawk (Buteo regalis). In: The Birds of North America, No. 172 (A. Poole and F. Gill, eds.). The Academy of Natural Sciences, Philadelphia, and The American Ornithologists' Union, Washington, D.C. 20 pp.
Cully, J.F. JR. 1991. Response of raptors to reduction of a Gunnison's prairie dog population by plague.. American Midland Naturalist. 125:140-149.