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Ecology Of The Ferruginous Hawk (Buteo Regalis) In Central Utah Population Dynamics And Nest Site Selection, Neil D. Woffinden
Ecology Of The Ferruginous Hawk (Buteo Regalis) In Central Utah Population Dynamics And Nest Site Selection, Neil D. Woffinden
Theses and Dissertations
Research was conducted to determine the effect of prey numbers on the nesting success of the Ferruginous Hawk (Buteo regalis). Conditions associated with nest site selection were also established. Frequent visits were made to active nests to determine clutch sizes, hatching dates and fledging success. Prey remains were collected from nests and analyzed. Kilometer square transects were made throughout the study area in 1974 to determine jackrabbit densities. A drastic decline in numbers of Ferruginous Hawks occurred. The number of young fledged also declined throughout the study while nestling mortality increased. Jackrabbit numbers were high in 1972 and then declined …