Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 43 for “"woodpecker"”.
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Woodpecker Nesting Habitat in a Prairie River Woodland
… sapsucker (Sphyrapicus varius), downy woodpecker (Picoides pubescens), and red-headed woodpecker (Melanerpes erythrocephalus) were studied on the Big Sioux River riparian forest of eastern South Dakota during 1980 and 1981. Nest site preferences were compared using two-group stepwise …
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Female Dispersal and Inbreeding in the Red-cockaded Woodpecker
… three aspects of the biology of the red-cockaded woodpecker: dispersal of breeding females; the costs, benefits, and frequency of inbreeding; and the effect of inbreeding on natal dispersal. Dispersal of breeding female red-cockaded woodpeckers is strongly associated with inbreeding avoidance and …
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Effects of Military Training Activity on Red-cockaded Woodpecker Demography and Behavior---AND---New Territory Formation in the Cooperatively Breeding Red-cockaded Woodpecker
The red-cockaded woodpecker (Picoides borealis) is a federally endangered species. As such, populations need to be increased in order to achieve recovery goals outlined by the U.S. Fish and Wildlife Service. My thesis is composed of two chapters that represent opposite sides of this issue. The …
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Population Dynamics and Dispersal Coalitions in the Cooperatively Breeding Acorn Woodpecker
… in a population of cooperatively breeding acorn woodpeckers in central California, USA. Using a 34-year dataset on occupancy and abundance, I determined that increases in abundance were determined by dispersal to new locations. This resulted in increased occupancy, rather than increases in group …
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NEST SITE CHARACTERISTICS OF LEWIS’S WOODPECKER (MELANERPES LEWIS) IN RIPARIAN SYSTEMS OF WESTERN MONTANA
The Lewis’s Woodpecker (Melanerpes lewis) is known to breed in ponderosa pine, cottonwood riparian, aspen, and burned conifer forest types, but is declining in much of its range throughout the U.S. and is listed as a Level II Species of Concern in Montana. In western Montana, Lewis’s Woodpeckers …
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NEST SITE CHARACTERISTICS OF LEWIS’S WOODPECKER (MELANERPES LEWIS) IN RIPARIAN SYSTEMS OF WESTERN MONTANA
The Lewis’s Woodpecker (Melanerpes lewis) is known to breed in ponderosa pine, cottonwood riparian, aspen, and burned conifer forest types, but is declining in much of its range throughout the U.S. and is listed as a Level II Species of Concern in Montana. In western Montana, Lewis’s Woodpeckers …
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Ultimate and Proximate Explanations of Helping Behavior in the Red-cockaded Woodpecker (Picoides borealis)
… assist others in raising young. Red-cockaded woodpecker helpers may again future indirect fitness benefits by increasing survival of breeders, who produce offspring related to the helper in the future. Breeder survival may be enhanced because of general benefits of group living, either because …
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The Dynamics of Cavity Excavation and Use by the Red-Cockaded Woodpecker (Picoides Borealis)
… in the cooperatively breeding red-cockaded woodpecker. The long times required for cavity excavation select for competition over breeding vacancies in established territories and against excavation of cavities in unoccupied habitat. Duration of excavation varies between woodpecker …
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Red-headed Woodpecker Habitat Selection and Breeding Ecology on Fort Drum Military Installation, New York
Red-headed woodpecker (Melanerpes erythrocephalus) populations have declined range-wide over the past 40 years, although the causal mechanisms implicated in the observed declines remain poorly understood. Population decline has been most severe at the periphery of their range, particularly in the …
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Seasonal changes in the foraging methods and habitats of six sympatric woodpecker species in southwestern Virginia
… hairy, pileated, red-bellied, and red-headed woodpeckers, and common flickers were studied in southwestern Virginia during the breeding season, post-breeding season, and winter. The food resource used by the six species was partitioned by species' use of different macro-habitats (forest …
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Arthropod assemblages on longleaf pines: a possible link between the red-cockaded woodpecker and groundcover vegetation
… base for the federally endangered red-cockaded woodpecker (RCW). In a recent study, this arthropod community has been suggested to be the mechanism by which RCW reproductive success is linked to the groundcover composition of the forest (which is a reflection of the forest's fire history). This …
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Foraging Habitat and Reproductive Success of Red-Cockaded Woodpecker (<em>Picoides borealis</em>) Groups in Southeastern Georgia
… of the federally endangered Red-cockaded Woodpecker (.Picoides borealis). The Technical/Agency Draft Revised Recovery Plan for the Redcockaded Woodpecker (Picoides borealis) (USFWS 2000) sets the most comprehensive guidelines yet available for the management of Red-cockaded Woodpecker …
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Stress in the Red-cockaded Woodpecker: Hormonal Mechanisms of Reproductive Suppression in Helper Males and Impacts of Military Training Activities
… corticosterone in the endangered red-cockaded woodpecker (Picoides borealis) to determine their role in the reproductive behavior of individuals in this species, and whether they are affected by human disturbance. In chapter one, I provide an introduction to the vertebrate stress response and I …
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Breeding biology, mating system and population dynamics of the Lesser Spotted Woodepcker (Picoides minor) : combining empirical and model investigations
… dynamics of the endangered Lesser Spotted Woodpecker (Picoides minor) in Central Europe. Here, I combine a range of approaches, from empirical investigations of a Lesser Spotted Woodpecker population in the Taunus low mountain range in Germany, the analysis of empirical data and the …
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