Global ETD Search
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Showing 1 to 5 of 5 for “"fledgling success"”.
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Evidence for Local Adaptation in Birds
… advantage (increased survival or reproductive success) within the local environment, and (3) local variants of traits must be heritable. In chapter two, we review evidence for local adaptation in birds. Geographic variation among populations is nearly ubiquitous, yet experimental tests of the …
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Foraging Habitat and Reproductive Success of Red-Cockaded Woodpecker (<em>Picoides borealis</em>) Groups in Southeastern Georgia
… 2000 guidelines would have higher reproductive success than those not in compliance. I measured habitat within 800 m of the biological center of 65 Red-cockaded Woodpecker clusters and recorded reproductive success (eggs, fledglings) within those clusters from 1998-2001. On average, Fort Stewart …
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Behavioural ecology of the Redbilled Woodhoopoe Phoeniculus purpureus in South Africa
… presence of nonbreeding helpers do not increase fledgling success, breeding frequency, survivorship (of any age, sex or social class), or number of breeder-offspring produced. Because no unambiguous indirect fitness benefits could be shown to result from helping behaviour (specifically …
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Nesting ecology and conservation of shrubland birds in a fragmented urbanized landscape in northeastern Illinois
… information exists regarding nesting ecology and success of shrubland birds in fragmented patches in urbanized areas in regenerating agricultural fields. Nesting success/failure may co-vary with factors such as bird species, predator type, weather, microhabitat conditions at the nest, and …
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Nest-site selection by Sharp-shinned Hawks in Kentucky
<p>Because Sharp-shinned Hawks (Accipiter striatus) are the most secretive of North America's forest-breeding raptors, little is known about their breeding biology, including their preferred nesting habitat. In 2009 and 2010, I searched 248 forest stands in Kentucky and found 11 nests, all located …