30 



LITERATURE CITED 

 Bechard, M. J. 1981. Historical nest records for the 



ferruginous hawk in Manitoba. Can. Field-Natur. 



95:467-469. 

 DeVelice, R. L. 1991. MTNHP site and community survey 



manual. version 91B. Montana Natural Heritage 



Program, Helena, MT. 24 pp. 

 Ensign, J. T. 1983. Nest site selection, productivity, and 



food habits of ferruginous hawks in southeastern 



Montana. MS. thesis. Montana State University, 



Bozeman. 83 pp. 

 Evans, D. L. 1982. Status reports on twelve raptors. 



Special Scientific Report — Wildlife No. 238. U.S. Fish 



and Wildlife Service, Washington, D.C. 70 pp. 

 Fitzner, R. E. , D. Berry, L. L. Boyd, and C. A. Rieck. 



1977. Nesting of ferruginous hawks (Buteo regalis) in 



Washington, 1974-1975. Condor 79:245-249. 

 Gilmer, D. S. and R. E. Stewart. 1983. Ferruginous hawk 



populations and habitat use in North Dakota. J. 



Wildlife Management 47:146-157. 

 Harmata, A. R. 1991. Impacts of oil and gas development on 



raptors associated with Kevin Rim, Montana. Unpubl . 



report. Montana State University, Bozeman. 97 pp. 

 Houston, C. S. and M. J. Bechard. 1984. Decline of the 



ferruginous hawk in Saskatchewan. Amer. Birds 38:166- 



170. 



