@article{Yohannes2011colla-26508,
  year={2011},
  doi={10.1007/s10336-011-0794-y},
  title={Bone collagen and muscle δ<sup>13</sup>C in relation to the timing of the migration of Garden Warblers Sylvia borin during return migration from Africa},
  number={3},
  volume={153},
  issn={2193-7192},
  journal={Journal of Ornithology},
  pages={783--791},
  author={Yohannes, Elizabeth and Lee, Raymond and Popenko, Vladimir and Bauchinger, Ulf}
}

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    <dcterms:bibliographicCitation>Journal of Ornithology ; 153 (2012), 3. - S. 783–791</dcterms:bibliographicCitation>
    <dc:creator>Popenko, Vladimir</dc:creator>
    <dc:creator>Yohannes, Elizabeth</dc:creator>
    <dcterms:abstract xml:lang="eng">In migratory birds, seasonal factors interacting at different stages of the annual cycle can influence individual life histories. These have been well documented for Nearctic-Neotropical birds. Yet, seasonal interactions between the wintering, migration, and breeding periods have not been demonstrated for Palearctic-African passerine migrants. We tested whether variation in long- and shortterm dietary choice of the Garden Warbler Sylvia borin can influence events during the subsequent spring migration from the African winter quarters to the Palearctic breeding grounds. Using bone collagen and muscle carbon stable isotope (d13C) analysis, we assessed the relationships between dietary history, body condition, and migration timing in the Garden Warbler during a return migration from Africa. We predicted that Garden Warblers arriving early will have significantly different muscle and collagen d13C relative to those arriving later. Whereas muscle d13C (referring to events in the immediate past) was not related to body condition, we found a strong association between body condition and collagen d13C signatures (representing the integration of long-term events). Collagen and muscle d13C indicate that birds passing through later originated from moister or cooler geographic areas. The observed variation in isotope signatures might relate to differences in habitat and geographic/population origin, or in dietary intake.</dcterms:abstract>
    <dcterms:issued>2011</dcterms:issued>
    <dcterms:title>Bone collagen and muscle δ&lt;sup&gt;13&lt;/sup&gt;C in relation to the timing of the migration of Garden Warblers Sylvia borin during return migration from Africa</dcterms:title>
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    <dc:contributor>Yohannes, Elizabeth</dc:contributor>
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    <dc:contributor>Popenko, Vladimir</dc:contributor>
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