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 8 of 8 for “"bird flight"”.
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The allometry of bird flight performance
<p>Avian flight performance decreases with body size in birds, but previous work has been unable to define the underlying mechanism. Wingbeat frequency is hypothesized to ultimately constrain flight performance via muscular mechanical power output because frequency decreases with body size. I …
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The allometry of bird flight performance
<p>Avian flight performance decreases with body size in birds, but previous work has been unable to define the underlying mechanism. Wingbeat frequency is hypothesized to ultimately constrain flight performance via muscular mechanical power output because frequency decreases with body size. I …
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Investigating bird flight characteristics and habitat use to better understand ornithological impacts of wind farms
… assessed. The impacts of wind farms on birds have been of particular concern. In this thesis I have highlighted how bird flight characteristics and habitat use can be better quantified and the consequences this may have for the assessment of the impacts of wind energy developments on …
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Improving the efficiency and accuracy of nocturnal bird Surveys through equipment selection and partial automation
Birds are a key environmental asset and this is recognised through comprehensive legislation and policy ensuring their protection and conservation. Many species are active at night and surveys are required to understand the implications of proposed developments such as towers and reduce possible …
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Toward Efficient Bio-Inspired Propulsion: The Effect of Propulsor Shape and Kinematics on System Performance and Efficiency during Bio-inspired Locomotion
Both bird and fish locomotion are thought to be more efficient than the equivalent man-made vehicles driven by propellers/impellers and jet engines. Through studies that decompose the different kinematic and shape effects of these biological systems, we can understand what leads to their high …
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The Rise of Modern Avian Flight: Wing Movement and Joint Mobility Within Ornithurae
How and when avian powered flight arose has intrigued scientists for well over a century. Birds have a remarkable fossil record demonstrating their macroevolutionary transition from dinosaurs to birds during the Mesozoic Era. Thus, Mesozoic fossils offer us a unique opportunity to study the …
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The Near Wake of a European Starling
… with high speed cameras which imaged the bird. These measurements have been used to generate vector maps in the near wake that can be associated with the bird’s location and wing configuration. A kinematic analysis has been performed on select sequences of measurements to characterize the …
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Anatomical, morphometrical and biomechanical studies of barn owls' and pigeons' wings
… owl to fly slowly, which in turn might reduce flight noise. Pigeons' wings are smaller, less cambered and show a different thickness distribution. Since their wings do not produce as much lift as wings of the barn owl, pigeons have to beat their wings at high frequencies in order to fly slowly, …