@article{Rattenborg2004Migra-42551,
  year={2004},
  doi={10.1371/journal.pbio.0020212},
  title={Migratory sleeplessness in the white-crowned sparrow (Zonotrichia leucophrys gambelii)},
  number={7},
  volume={2},
  issn={1544-9173},
  journal={PLoS biology},
  author={Rattenborg, Niels C. and Mandt, Bruce H. and Obermeyer, William H. and Winsauer, Peter J. and Huber, Reto and Wikelski, Martin and Benca, Ruth M.},
  note={Article Number: e212}
}

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    <dc:creator>Benca, Ruth M.</dc:creator>
    <dcterms:title>Migratory sleeplessness in the white-crowned sparrow (Zonotrichia leucophrys gambelii)</dcterms:title>
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    <dc:contributor>Winsauer, Peter J.</dc:contributor>
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    <dc:contributor>Benca, Ruth M.</dc:contributor>
    <dc:creator>Wikelski, Martin</dc:creator>
    <dc:contributor>Wikelski, Martin</dc:contributor>
    <dcterms:issued>2004</dcterms:issued>
    <dc:contributor>Rattenborg, Niels C.</dc:contributor>
    <dc:creator>Mandt, Bruce H.</dc:creator>
    <dc:creator>Rattenborg, Niels C.</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2018-06-13T06:50:56Z</dc:date>
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    <dc:contributor>Obermeyer, William H.</dc:contributor>
    <dc:creator>Obermeyer, William H.</dc:creator>
    <dc:contributor>Mandt, Bruce H.</dc:contributor>
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    <dc:creator>Huber, Reto</dc:creator>
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    <dcterms:abstract xml:lang="eng">Twice a year, normally diurnal songbirds engage in long-distance nocturnal migrations between their wintering and breeding grounds. If and how songbirds sleep during these periods of increased activity has remained a mystery. We used a combination of electrophysiological recording and neurobehavioral testing to characterize seasonal changes in sleep and cognition in captive white-crowned sparrows (Zonotrichia leucophrys gambelii) across nonmigratory and migratory seasons. Compared to sparrows in a nonmigratory state, migratory sparrows spent approximately two-thirds less time sleeping. Despite reducing sleep during migration, accuracy and responding on a repeated-acquisition task remained at a high level in sparrows in a migratory state. This resistance to sleep loss during the prolonged migratory season is in direct contrast to the decline in accuracy and responding observed following as little as one night of experimenter-induced sleep restriction in the same birds during the nonmigratory season. Our results suggest that despite being adversely affected by sleep loss during the nonmigratory season, songbirds exhibit an unprecedented capacity to reduce sleep during migration for long periods of time without associated deficits in cognitive function. Understanding the mechanisms that mediate migratory sleeplessness may provide insights into the etiology of changes in sleep and behavior in seasonal mood disorders, as well as into the functions of sleep itself.</dcterms:abstract>
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