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 116 for “"fledging"”.
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Pre- to post-fledging carryover effects and the post-fledging ecology of the Dickcissel (Spiza americana)
The post-fledging period—defined as the time between when a bird leaves its nest and disperses or migrates—is a critical stage in the avian life cycle. Past research has identified survival during this stage as a key component in population growth and maintenance of avian species. Therefore, …
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Age-specific mortality, pre- to post-fledging carryover effects, and the timing of fledging in altricial songbirds
… and offspring mortality as nest and post-fledging account for the vast majority of offspring mortalities. My research examined associations between juvenile mortality and traits (morphological and behavioral) across the nesting and post-fledging period in a community of songbirds to …
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Vocal Handedness: The Emergence of Lateralization at Fledging
… leave the nest, which is referred to as "fledging." In chapter 3, I performed unilateral denervations across begging call ontogeny and found that late, but not early begging calls are asymmetrically produced. I further show that this onset of asymmetric contributions to the begging call by …
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The relationship between temperature, rainfall, and tree swallow fledging times
… can directly or indirectly influence the fledging success of nestlings. I investigated the effect of minimum temperature, maximum temperature, average temperature, maximum rainfall experienced in one day during a fledging period, and average daily rainfall on how long it takes tree swallow …
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Factors influencing pre-fledging mass recession of nestling Tree Swallows
… achieve an optimum wing loading by the time of fledging. However, studies of aerial insectivores to date have been limited to two species of swifts (Apodidae), and additional studies of species of aerial insectivores are needed to determine if factors contributing to pre-fledging mass recession …
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Post-fledging ecology of an endangered species: The golden-cheeked warbler
… fledglings in Texas. I monitored nests until fledging and tracked fledglings for at least four weeks after leaving the nest. I estimated survival rates for fledglings during the first four weeks out of the nest, analyzed how habitat and behavioral factors affect survival, and described …
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Post-fledging begging and development in Southern Pied Babblers (Turdoides bicolor)
Includes abstract. Includes bibliographical references.
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Population demography of lark buntings: post-fledging survival, fecundity, and breeding decisions
… I estimated demographic parameters (i.e., post-fledging survival and fecundity) for lark buntings in a relatively extensive (62% grassland remaining within a 21,600 km2 area) native shortgrass landscape on the Pawnee National Grassland, Colorado in 2001-2003. In chapter 1 ,1 applied an …
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Resource selection, movement patterns, and survival of post-fledging grassland birds in Missouri
… for grassland birds, but ignore post-fledging requirements. I described resource selection, movement patterns, and survival of dickcissels (Spiza americana) and eastern meadowlarks (Sturnella magna) in southwestern Missouri, from 2002 to 2004 using radio telemetry. Across species at …
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Facultative adjustment of pre-fledging mass recession by nestling Chimney Swifts (Chaetura pelagica)
<p>In species that are susceptible to mass-dependent flight costs, particularly seabirds and aerial insectivores, mass recession is a crucial aspect of the nestling period, ensuring fledglings will have an appropriate wing loading. My objectives were to determine if mass recession by Chimney Swift …
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Habitat selection and survival of juvenile black-capped vireos during the post-fledging period
… models in Program MARK, estimated overall post-fledging survival to be 55% (86% for females and 40% for males). Movement patterns varied among individuals and males tended to make more foray movements than females. Both sexes were frequently seen in association with conspecifics and …
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Post-fledging habitat use and movements of worm-eating warblers in the Tennessee River Gorge
… specialist with little known regarding its post-fledging habitat needs. I used harness-attached radio transmitters to track fledgling WEWAs in the Tennessee River Gorge to study habitat components and daily movements. Results between fledgling location and random points indicate that degrees …
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Using marsh bird nest survival and post-fledging habitat use and survival to inform wetland management
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Intrabrood Dominance Hierarchies in Juvenile Red-Cockaded Woodpeckers: The Role of Early Social Environment On Post-Fledging Survival and Natal Dispersal
… than dominants. The social environment prior to fledging influenced male dispersal decisions and subordinates delayed dispersal in the spring in situations where all dominants died over the winter. The probability of delayed dispersal in females was higher for females raised without brood-mates …
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Nestling Diet, Quality, and Post-fledging Survival: Comparing Two Species of Aerial Insectivores in a Gradient of Agricultural Intensity in Saskatchewan, Canada
… on future life-stages, including the post-fledging transitional period to independence. In 2020 and 2021, using a comparative approach between two sympatric species, Barn Swallows (Hirundo rustica) and Tree Swallows (Tachycineta bicolor), following a scale-of-effect approach, I investigated …
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Sandhill crane colt survival and fledging success in northeastern Illinois: the role of age and significance of land cover in an urbanized landscape
The breeding and fledging success of Sandhill Cranes (Grus canadensis spp.) in urban landscapes has been largely unexplored by previous research. I evaluated survival and habitat use of young Greater Sandhill Cranes (G. c. tabida) in northeastern Illinois, where the Eastern Population of cranes and …
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POPULATION DYNAMICS OF SPECIES RECOVERY: MULTISCALE DEMOGRAPHY IN RESTORED HABITATS
… at contrasting life stages (e.g., nesting, post-fledging). From 2015-2018, we surveyed male Golden-winged Warblers and measured vegetation attributes in 672 restored habitats in the Great Lakes (n = 215) and Appalachian Mountains (n = 457) regions of the breeding range. In addition to estimating …
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Reproductive Ecology of Greater Sandhill Cranes in Nevada
… and estimate daily survival rates, nest success, fledging success, and covariates. Daily survival rates (DSRs) of nests were negatively related to density of crane pairs, and positively related to proximity to roads and vegetation height at nests. Low daily minimum temperatures had a negative …
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Niche segregation among three sympatric species of swallows in southern Ontario
… differences in nestling diet and post-fledging movements. Using DNA barcoding of nestling feces and stable isotope analysis (δ13C, δ15N, δ2H) of nestling feathers, I found evidence of differences in dietary sources of provisioned young. Barn Swallows showed evidence of provisioning more …
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Variation in mass and wing loading of nestling American Kestrels: possible effects of nestling behavior and adult provisioning behavior
… attain an efficient wing loading just prior to fledging to facilitate mobility for hunting and evading predators. My objective was to examine the mass of nestling American Kestrels (Falco sparverius) during the mid- to late nestling period and specifically to determine the possible effects of …
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