R. B. Frederick

Variable Water Levels and Wood Duck Recruitment in Kentucky

Recruitment in prairie duck populations is correlated with annual wetland conditions, but a similar relationship has not been demonstrated for wood ducks (Aix sponsa). Therefore, we studied the influence of variable water levels on wood duck recruitment at Sloughs Wildlife Management Area in western Kentucky during 1988 and 1989. In 1989, when water levels were higher (P < 0.0001), nest initiation was earlier, the nesting season lasted approximately 3 weeks longer, and mean brood sizes were greater (P < 0.05). Results suggest high water levels should be maintained during years of...


Home-range Size and Overlap of Eastern Kentucky Bobcats

Ten adult bobcats (Felis rufus) were located by radio-telemetry during 15 months in Breathitt County, Kentucky. Annual home ranges, calculated by using the 95% Minimum Convex Polygon Method, averaged 59.4 km2 (range 14.5-133.3 km2 , N = 6) for males and 4.7 km2 (range 2.8-8.1 km2 , N = 4) for females. Female intrasexual overlap was not observed, while male intrasexual overlap averaged 71 %. There were no differences among seasons in home-range size or percentage overlap for males or females (P > 0.05). Variability in home-range size and the high degree of male intrasexual overlap may...