Global ETD Search
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Showing 1 to 20 of 34 for “"post-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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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
… requirements 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 …
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Habitat selection and survival of juvenile black-capped vireos during the post-fledging period
… and wintering ecology. Until recently, the post-breeding season, the period from the completion of breeding and the onset of migration, has been overlooked. During this period, juvenile birds independent of parental care must find food to build up fat reserves for migration 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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Age-specific mortality, pre- to post-fledging carryover effects, and the timing of fledging in altricial songbirds
… histories 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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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
… effects 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 …
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Niche segregation among three sympatric species of swallows in southern Ontario
… interspecific 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 …
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POPULATION DYNAMICS OF SPECIES RECOVERY: MULTISCALE DEMOGRAPHY IN RESTORED HABITATS
… needs 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 …
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The pre-reproductive period in a tropical bird: parental care, dispersal, survival, and avian life histories
… parental care after offspring left the nest (the post-fledging period) was greater than care during the nestling period. Prolonged care resulted in a clear trade-off for parents as they did not nest again until fledglings from the first brood were independent. Parents fed offspring for a prolonged …
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Reproductive success and survival of the Common Grackle in central Illinois
… the survival of 53 fledglings for the 20-day post-fledging period. I found no evidence that demographic rates during the breeding season were driving the observed decline in Common Grackle populations in Illinois. Average clutch size was 4.26 (SE = 0.07), slightly below the average of 4.35 (N …
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Fitness and Implications of Reproductive Decisions for Black Brant Nesting on the Yukon-Kuskokwim Delta, Alaska
… of goslings primarily influences fitness after fledging, so one hypothesis is that survival before fledging, which is influenced by predation, is traded off against growth rates and post-fledging survival. I estimated pre-fledging and post-fledging survival for goslings reared on areas used by …
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Conservation of Grassland Birds in an Agricultural Landscape: The Importance of Habitat Availability and Demography
… of surrounding farmland, especially for post-breeding females and post-fledging juveniles. Additional experimental creation of more isolated grassland tracts would help test the hypothesis that clusters of nearby grasslands are preferable to more isolated tracts.
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Piping Plover (Charadrius melodus) habitat selection, survival, and migration on New York barrier islands following natural and engineered habitat changes
… for nesting during 2015–2017. We assessed post-fledging survival with radio telemetry and mark-recapture methods. We banded and monitored 292 fledged chicks from 2013–2018. We affixed nanotags to 43 pre-fledged chicks and tracked them to document mortality on their natal grounds. We used a …
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Aspects of the foraging and breeding ecology of the Southern African Kestrel, Falco tinnunculus rupicolus
… breeding parameters (clutch size, hatching and fledging success, nestling, fledging and post-fledging periods) of the Southern African Kestrel. These parameters were compared to those from studies made on the European Kestrel (Falco tinnunculus tinnunculus) in western Europe (53 °N) in an …
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Behavioural ecology of lesser sheathbills Chionis minor at Marion Island
… assessed. The birds' reproductive output and post-fledging survival rates were estimated and probable factors limiting the population examined. Seasonal and spatial variations in the diet and foraging habits were related to the quality, availability and distribution of food, and the effects of …
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