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  1. Cliff-nesting raptor survey of the Sioux District, Custer National Forest : 1994 / submitted by Paul Hendricks and Keith H. Dueholm; a report to USDA Forest Service, Custer National Forest.
    By: Hendricks, P. - Dueholm, Keith H. - Custer National Forest (Agency : U.S.) - Montana Natural Heritage Program.
    Publication info: Helena, Mont. :Montana Natural Heritage Program,c1995.
    Contributed by: Montana State Library (archive.org)
    Subjects: Birds of prey  Custer National Forest (Mont. and S.D.)  Ferruginous hawk  Golden eagle  Goshawk  Merlin (Bird)  Nests  Prairie falcon  Surveys  Swainson's hawk  
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  2. Ferruginous hawk (Buteo regalis) inventories on the Dillon Resource Area of southwest Montana; 1992 / by Eric C. Atkinson for the Bureau of Land Management, Dillon Resource Area.
    By: Atkinson, Eric C. - Montana Natural Heritage Program. - United States.
    Publication info: Helena, MT :Montana Natural Heritage Program,[1992]
    Contributed by: Montana State Library (archive.org)
    Subjects: Beaverhead County  Ferruginous hawk  Hawks  Madison County  Montana  
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