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.
Results
Showing 1 to 19 of 19 for “"Avian ecology"”.
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Avian ecology and rapid morphological change in a novel plant-frugivore system
… morphological changes may influence the species’ ecology, I then related their foraging and movement behavior to their morphology. Lastly, I used point counts conducted across the island to describe the spatial heterogeneity of the bird community and then related that heterogeneity and species’ …
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The role of incubation temperature in determining avian phenotype: implications for avian ecology, life history evolution, and conservation
… temperatures are a defining component of the avian developmental environment. Aspects of the nest environment may be an important and overlooked maternal effect in birds as nearly all birds physically incubate their eggs, thus providing a clear link between parental behavior and the …
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A comparison of the ecology and population dynamics of a neotropical migrant landbird, the hooded warbler, in winter and summer
A central question in the study of avian ecology is to determine where and how migrant bird populations are limited. I studied the habitat selection, foraging ecology, and population dynamics of the Hooded Warbler (Wilsonia citrina) during the breeding season in Maryland, USA, and during the …
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Age-specific mortality, pre- to post-fledging carryover effects, and the timing of fledging in altricial songbirds
… insight into how age-specific mortality shapes avian ecology and life history evolution. Specifically, my research sought to (1) test for potential pre- to post-fledging carryover effects under a morphology-performance-fitness paradigm; (2) evaluate nesting and post-fledging survival rates to …
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Effects of temperature and food availability on the reproductive ecology of an arid-zone bird
… high and increasing environmental temperature on avian ecology. However, the potential for resource availability to moderate environmental temperature effects on birds' behaviour, physiology, morphology, and success during breeding remains understudied. I investigated these lesser-known concepts …
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CROW - CultuRal co-evOlution of corvids: Winged omens of the times
… from Palaeolithic to present. By combining avian ecology, historical literature, art historical context, artefactual representation, archaeological presence, zooarchaeological analysis and isotopic data, it provides a detailed diachronic analysis that reveals how attitudes to corvids have …
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CROW - CultuRal co-evOlution of corvids: Winged omens of the times
… from Palaeolithic to present. By combining avian ecology, historical literature, art historical context, artefactual representation, archaeological presence, zooarchaeological analysis and isotopic data, it provides a detailed diachronic analysis that reveals how attitudes to corvids have …
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Cities for birds, birds for cities: The urban ecology of birds across scales from global sampling to individual responses
… patterns. This thesis examines the urban ecology of birds across scales, from a global standardized monitoring framework to city-level drivers of species prevalence and individual behavioural responses to human activity in an urban songbird. In Chapter 2, I describe and validate the Global …
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Ecological Factors Associated With Songbird and Small Mammal Predation by Texas Ratsnakes
… have focused exclusively on prey. In studies of avian ecology, predation is the primary cause of nest failure and yet few studies examine predators directly. For my dissertation, I used radio-telemetry to monitor Texas ratsnake (Elaphe obsoleta ) habitat use and behavior to examine predation risk …
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Effects of forest fragmentation on the demography of ovenbirds (Seiurus aurocapillus) in the boreal forest
The demography of ovenbirds (Seiurus aurocapillus) was compared in landscapes highly fragmented by agriculture, moderately fragmented by commercial harvesting, and in contiguous boreal forest of Saskatchewan. Various survey techniques demonstrated that ovenbirds were less common in small, isolated …
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Temporal space use dynamics and full breeding cycle survival rates of eastern whip-poor-wills in Illinois
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Examining Avian Communities in Wetlands at Multiple Spatial Extents
… a review of previously published studies on avian use of anthropogenic wetlands, including a meta-analysis that compared wetland bird community metrics between anthropogenic wetlands and reference sites. My results suggested that while created and restored wetlands do support many avian …
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Is timing everything? Examining the importance of the timing of parasitism to cowbird reproductive success
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Nest site selection by common eiders : relationships with habitat features, microclimate and incubation success
Habitat selection theory presumes that organisms are not distributed randomly in their environments because of habitat-specific differences in reproductive success and survival; unfortunately, many previous studies were either unable or failed to look for evidence of processes shaping nest site …
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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
In the last decades, several species of avian aerial insectivores have experienced steep declines in different regions of North America, and no single driver has been identified. Given the common reliance of aerial insectivores on flying insects, changes in spatiotemporal availability of prey …
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Survival and habitat use of the Kirtland’s Warbler in the breeding and post-breeding periods
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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Effects of non-native woody plant species on shrubland birds of conservation concern
Shrubland birds are among the fastest declining groups of birds over the past 50 years. Habitat loss and degradation are proposed as being major drivers, but the underlying causes of these declines are unknown. I investigated some of the potential factors driving population declines in three …
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Avian nest predation: relationships with landscape characteristics and influences on adult and nestling behavior.
Nest predation is the leading cause of reproductive failure in birds. As a result, many studies have sought to understand what factors influence nest predation as well as the ways in which birds respond to predation. However, identifying the factors that lead to variation in nest predation has …
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Comparative reproductive biology of co-occurring endangered and common shrubland birds
Black-capped vireos (Vireo atricapilla) and white-eyed vireos (Vireo griseus) are closely related and ecologically similar. Despite these similarities, white-eyed vireos are widely distributed and common, whereas the black-capped vireo has a restricted breeding range and is federally endangered. …