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 5 of 5 for “"American Birds"”.
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Evaluation Of Selected Spectral Vegetation Indices In Senescent Rangeland Canopy Using Landsat Imagery
<p>Grassland birds are diminishing more steadily and rapidly than other North American birds in general. The nesting success of some grassland bird species depends on the amount of nonproductive vegetation (NPV). To estimate NPV land managers are currently using the Robel pole visual obstruction …
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Habitat ecology of the Painted Bunting on the Ozark Plateau
"Increased public interest in nongame birds in recent years (Payne and DeGraaf 1975) calls for the consideration of such species' requirements by resource management agencies. These requirements must first be determined before a particular species can be considered in any management scheme. The …
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When the Map Fails the Territory: Hidden State Models, Complex Traits and the Evolution of Bird Migration
… underlying movement behavior in North American birds (Chapter ref{ch:2}). Next, I fit SHMMs informed by this structure to global and North American bird phylogenies, testing hypotheses about how migration may have evolved, while accounting for classification ambiguity (Chapter …
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Fight and flight: Behavioural drivers and evolutionary consequences of resource competition in birds
… and social behaviours influence competition in birds, a group of species that vary in competitive abilities. First, I investigate the evolution of flight apparatus morphologies related to high-performance flight in hummingbirds through the lens of species foraging competition. I show that …