31 

 Johnsgard, P. A. 1990. Hawks, eagles, and falcons of 

 North America. Smithsonian Institution Press, 

 Washington, D.C. 4 03 pp. 

 Kochert, M. N. , B. A. Millsap, and K. Steenhof. 1988. 



Effects of livestock grazing on raptors with emphasis 

 on the southwest. pp 325-334 in B. G. Pendleton (ed.), 

 Proc. of the Southwest Raptor Management Symposium and 

 Workshop. National Wildlife Federation Scientific and 

 Technical Series No. 11. 

 Kuchler, A. W. 1964. Potential Natural Vegetation of the 

 Conterminous United States. American Geographical 

 Society, Special Publication 36. 156 pp. 

 Ludwig, J. A. and J. F. Reynolds. 1988. Statistical 



ecology: a primer on methods and computing. Wiley- 

 Interscience Publication. New York, New York. 

 Myers, L. H. 1987. Nesting ecology of ferruginous hawks 

 in S.W. Montana. Paper presented at the Montana 

 Nongame Symposium, Kalispell, MT. February 11, 1987. 

 14 pp. 

 Murphy, J. R. 1978. Management considerations for some 



western hawks. Trans. N. Amer. Wildl. Natur. Resour. 

 Conf. 43:241-251. 

 Oakleaf, R. J. 1985. Ferruginous hawk: Wyoming. Paper 

 given at the Raptor research Foundation Meeting, 

 Sacramento, CA. 7 pp. 



