Narrow-Front Loop Migration in a Population of the Common Cuckoo Cuculus canorus, as Revealed by Satellite Telemetry

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2014
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Willemoes, Mikkel
Strandberg, Roine
Klaassen, Raymond H. G.
Tøttrup, Anders P.
Vardanis, Yannis
Howey, Paul W.
Thorup, Kasper
Alerstam, Thomas
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Plos One. 2014, 9(1), e83515. eISSN 1932-6203. Available under: doi: 10.1371/journal.pone.0083515.g003
Zusammenfassung

Narrow migration corridors known in diurnal, social migrants such as raptors, storks and geese are thought to be caused by topographical leading line effects in combination with learning detailed routes across generations. Here, we document narrow-front migration in a nocturnal, solitary migrant, the common cuckoo Cuculus canorus, using satellite telemetry. We tracked the migration of adult cuckoos from the breeding grounds in southern Scandinavia (n = 8), to wintering sites in south-western Central Africa (n = 6) and back to the breeding grounds (n = 3). Migration patterns were very complex; in addition to the breeding and wintering sites, six different stopover sites were identified during the 16,000 km annual route that formed a large-scale clockwise loop. Despite this complexity, individuals showed surprisingly similar migration patterns, with very little variation between routes. We compared observed tracks with simulated routes based on vector orientation (with and without effects of barriers on orientation and survival). Observed distances between routes were often significantly smaller than expected if the routes were established on the basis of an innate vector orientation programme. Average distance between individuals in eastern Sahel after having migrated more than 5,000 km for example, was merely 164 km. This implies that more sophisticated inherent guiding mechanisms, possibly involving elements of intermediate goal area navigation or more elaborate external cues, are necessary to explain the complex narrow-front migration pattern observed for the cuckoos in this study.

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570 Biowissenschaften, Biologie
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ISO 690WILLEMOES, Mikkel, Roine STRANDBERG, Raymond H. G. KLAASSEN, Anders P. TØTTRUP, Yannis VARDANIS, Paul W. HOWEY, Kasper THORUP, Martin WIKELSKI, Thomas ALERSTAM, 2014. Narrow-Front Loop Migration in a Population of the Common Cuckoo Cuculus canorus, as Revealed by Satellite Telemetry. In: Plos One. 2014, 9(1), e83515. eISSN 1932-6203. Available under: doi: 10.1371/journal.pone.0083515.g003
BibTex
@article{Willemoes2014Narro-29435,
  year={2014},
  doi={10.1371/journal.pone.0083515.g003},
  title={Narrow-Front Loop Migration in a Population of the Common Cuckoo Cuculus canorus, as Revealed by Satellite Telemetry},
  number={1},
  volume={9},
  journal={Plos One},
  author={Willemoes, Mikkel and Strandberg, Roine and Klaassen, Raymond H. G. and Tøttrup, Anders P. and Vardanis, Yannis and Howey, Paul W. and Thorup, Kasper and Wikelski, Martin and Alerstam, Thomas},
  note={Article Number: e83515}
}
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