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 16 of 16 for “"Chickadee"”.
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A phylogeographic investigation of the mountain chickadee
Mountain Chickadees (Parus gambeli) were collected from mountain ranges of the Great Basin and surrounding areas. Restriction endonuclease digestion of their mitochondrial DNA revealed two highly distinct haplotypes. One of these occurred in the Great Basin and extended eastward into Arizona and …
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The Breeding Biology of the Mountain Chickadee (Parus Gambeli)
The breeding biology of the Mountain Chickadee (Parus gambeli) was studied in 1968, 1969, 1970 in the Robinson Canyon, 13 miles west of Ellensburg, Kittitas County, Washington.
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SEASONAL CHANGES IN BLACK-CAPPED CHICKADEE (POECILE ATRICAPILLUS) SOCIAL STRUCTURE AND GARGLE VOCALIZATIONS
… can then create local dialects. Black-capped chickadees (<em>Poecile atricapillus</em>) are small songbirds of temperate habitats of North America that group together in larger flocks every winter. Dialects of the gargle vocalization have been identified that differ between chickadee …
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Use of Song Types by Male Carolina Chickadees (Poecile carolinensis)
<p>North American chickadees (Poecile spp.) are a closely related group in which vocalizations are very similar. The combinatorial 'chickadee' call, given by all members of the genus, has been well studied, especially in Black-capped chickadees. Chickadee song has received much less study, …
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Transcriptional Regulation of Profilin Is Required For Drosophila Larval Wound Closure
… induced cell migrations. Here we show that chickadee, which encodes the Drosophila Profilin, a protein important for actin filament recycling and cell migration during development, is required for the physiological process of larval epidermal wound closure. After injury, chickadee is …
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Towards a Molecular Genetic Analysis of Spermatogenesis in Drosophila
… in more detail. First, we showed that chickadee is required, presumably in stem cells, for germ cell proliferation. Second, we identified that ms(2)916 is needed to restrict the extent of germ cell proliferation during spermatogenesis. Third, we demonstrated that roughex is a novel …
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MYCOBIOME ANALYSIS OF TREES SELECTED BY BLACK-CAPPED CHICKADEES (Poecile atricapillus) AS NEST SITES
… of fungi in trees selected by black-capped chickadees (<em>Poecile atricapillus</em>) and compare them to communities in non-selected control trees to determine whether chickadee nest trees are associated with specific fungal taxa and communities. Overall, I identified 201 fungal OTUs to …
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Exotic Invasive Plants on Private Woodlands of Virginia: Effects on forest composition, structure, and wildlife habitat
… squirrel, downy woodpecker food, black-capped chickadee reproduction, and eastern wild turkey cover declined with the occurrence of exotic invasive plants. Twenty three of thirty seven total invasive plots were within twenty feet of a disturbance area. Continual assessment of impacts will help …
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Living in harsh environments: From individuals to social networks
… a social, small-bodied endotherm, the mountain chickadee, Poecile gambeli. These birds are resident montane specialists who rely on retrieving their previously cached food for survival when resources are scarce. Mountain chickadees are socially monogamous and form stable flocks composed of …
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The Causes and Consequences of Complex Behavioral Trait Variation in a Resident Montane Bird
… and nest building, in free-living mountain chickadees ( Poecile gambeli ). Chapter 1 describes the role of directional natural selection acting on spatial cognitive ability using a cohort comparison approach in a wild population. This study showed that spatial cognitive ability does not …
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Optimal sizing and placement of independent power producers on MV, HV and EHV networks for minimum power line losses using neural networks
… from the sending end substation using an ACSR Chickadee conductor. The 11kV ANN model also returns a total line loss value of 0.05351MW, while the true loss value is shown to be 0.05343MW (when compared to DIgSILENT Powerfactory simulations). This translates to an error of 0.1684%. The 22kV …
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Optimal sizing and placement of independent power producers on MV, HV and EHV networks for minimum power line losses using neural networks
… from the sending end substation using an ACSR Chickadee conductor. The 11kV ANN model also returns a total line loss value of 0.05351MW, while the true loss value is shown to be 0.05343MW (when compared to DIgSILENT Powerfactory simulations). This translates to an error of 0.1684%. The 22kV …
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Relationships Between Winter Energetic Condition and Reproductive Investment in a Wild Bird
… level. Using wild populations of black-capped chickadees (Poecile atricapillus), we evaluated whether traits relating to energetic condition (i.e., circulating corticosterone concentrations, oxidative balance, haemolytic complement activity, and body condition) during the non-breeding season …