D. Clay Sisson

The declining bobwhite populations evident throughout the Southeast are cause for concern. Whereas habitat loss and/or intensified agriculture have been implicated as two potential causal mechanisms for these declines, few studies have directly compared bobwhite demographics between agricultural and managed bobwhite plantation landscapes. Therefore, we monitored northern bobwhite (Colinus virginianus; hereafter, bobwhite) via radiotransmitters (N = 472) on a center-pivot irrigated agricul-tural landscape (N = 154) and an adjacent, intensively-managed bobwhite plantation (N = 318)...

We estimated seasonal and annual survival and cause-specific mortality of northern bobwhite (Colinus virginianus) on an intensively managed plantation in Georgia. During 1992-1997, we radio-marked 813 bobwhite and determined causes and temporal patterns of mortality. Annual survival (0.201) did not differ between sexes and was higher than that reported for other populations throughout the Southeast. Yearly variation in annual survival was primarily associated with variation in overwinter mortality. Seasonal survival did not differ between sexes and mortality was equitably distributed...

Increased interest in and use of growing season prescribed burning has caused concern among sportsmen and biologists as to the potential impact on ground nesting game birds. We used radio-telemetry and invertebrate sampling to evaluate early growing season (April-May) prescribed burning to provide wild turkey (Meleagris gallopavo) brood habitat in the Coastal Plain pine (Firms spp.) forests of south Georgia from 1988 to 1990. None of the 14 hen-poult groups monitored were ever located in spring burns. Additionally, there was no significant difference in invertebrate abundance during the...

We determined the density and characteristics of natural cavities suitable for wood duck (Aix sponsa) nest sites in an old-growth longleaf pine (Pinus palustris) forest in Thomas County, Georgia, in 1991 and 1992. Of 17 suitable cavities found on the 72-ha study area, 6 had been recently occupied by nesting wood ducks. Although this density (0.24 per ha) was low compared to northern hardwood forests, it was similar to the densities reported in Mississippi bottomland hardwoods and greater than the density reported for bald cypress (Taxodium distichum) and tupelo gum (Nyssa aquatica) stands...

We studied habitat selection by radio-tagged eastern wild turkey (Meleagris gallopavo silvestris) hens with broods ≤30 days old in the fire-maintained pine (Pinus) forests of southwestern Georgia from 1988 to 1990. Habitat selectivity was determined for 14 hen-poult groups that were tracked for 1 week or more. Hens with young broods preferred (P ≤ 0.05) oldfields and woodlands grazed by cattle. Bonferonni confidence intervals for individual hen-poult groups with >20 locations revealed considerable variation among individuals. Individual brood hens showed preferences (P ≤ 0.05) for...