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Remarkably similar migration patterns between different red-backed shrike populations suggest that migration rather than breeding area phenology determines the annual cycle

Pedersen, Lykke ; Onrubia, Alejandro ; Vardanis, Yannis LU ; Barboutis, Christos ; Waasdorp, Stef ; van Helvert, Monique ; Geertsma, Marten ; Ekberg, Per ; Willemoes, Mikkel LU and Strandberg, Roine LU , et al. (2020) In Journal of Avian Biology 51(10).
Abstract

The regular fluctuation of resources across the Globe guides movements of migratory animals. To ensure sufficient reproductive output and maintain viable population sizes, migratory animals should match arrival at breeding areas with local peaks in resource availability. It is generally assumed that breeding phenology dictates the timing of the annual cycle, but this is poorly studied. Here, we use light-level geolocator tracking data to compare the annual spatiotemporal migration patterns of a long-distance migratory songbird, the red-backed shrike, Lanius collurio, breeding at widely different latitudes within Europe. We find that populations use remarkably similar migration routes and are highly synchronized in time. Additional... (More)

The regular fluctuation of resources across the Globe guides movements of migratory animals. To ensure sufficient reproductive output and maintain viable population sizes, migratory animals should match arrival at breeding areas with local peaks in resource availability. It is generally assumed that breeding phenology dictates the timing of the annual cycle, but this is poorly studied. Here, we use light-level geolocator tracking data to compare the annual spatiotemporal migration patterns of a long-distance migratory songbird, the red-backed shrike, Lanius collurio, breeding at widely different latitudes within Europe. We find that populations use remarkably similar migration routes and are highly synchronized in time. Additional tracks from populations breeding at the edges of the European range support these similar migration patterns. When comparing timing of breeding and vegetation phenology, as a measure of resource availability across populations, we find that arrival and timing of breeding corresponds to the peak in vegetation greenness at northern latitudes. At lower latitudes birds arrive simultaneously with the more northerly breeding populations, but after the local greenness peak, suggesting that breeding area phenology does not determine the migratory schedule. Rather, timing of migration in red-backed shrikes may be constrained by events in other parts of the annual cycle.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
geolocator, migration, population, resources, songbird, timing
in
Journal of Avian Biology
volume
51
issue
10
article number
JAV12719
publisher
Federation of European Neuroscience Societies and Blackwell Publishing Ltd
external identifiers
  • scopus:85094156830
ISSN
0908-8857
DOI
10.1111/jav.02475
language
English
LU publication?
yes
id
5fedd9da-2bf3-4c62-b21e-100fde005f17
date added to LUP
2020-11-09 13:00:22
date last changed
2021-05-11 02:47:39
@article{5fedd9da-2bf3-4c62-b21e-100fde005f17,
  abstract     = {<p>The regular fluctuation of resources across the Globe guides movements of migratory animals. To ensure sufficient reproductive output and maintain viable population sizes, migratory animals should match arrival at breeding areas with local peaks in resource availability. It is generally assumed that breeding phenology dictates the timing of the annual cycle, but this is poorly studied. Here, we use light-level geolocator tracking data to compare the annual spatiotemporal migration patterns of a long-distance migratory songbird, the red-backed shrike, Lanius collurio, breeding at widely different latitudes within Europe. We find that populations use remarkably similar migration routes and are highly synchronized in time. Additional tracks from populations breeding at the edges of the European range support these similar migration patterns. When comparing timing of breeding and vegetation phenology, as a measure of resource availability across populations, we find that arrival and timing of breeding corresponds to the peak in vegetation greenness at northern latitudes. At lower latitudes birds arrive simultaneously with the more northerly breeding populations, but after the local greenness peak, suggesting that breeding area phenology does not determine the migratory schedule. Rather, timing of migration in red-backed shrikes may be constrained by events in other parts of the annual cycle.</p>},
  author       = {Pedersen, Lykke and Onrubia, Alejandro and Vardanis, Yannis and Barboutis, Christos and Waasdorp, Stef and van Helvert, Monique and Geertsma, Marten and Ekberg, Per and Willemoes, Mikkel and Strandberg, Roine and Matsyna, Ekaterina and Matsyna, Alexander and Klaassen, Raymond H.G. and Alerstam, Thomas and Thorup, Kasper and Tøttrup, Anders P.},
  issn         = {0908-8857},
  language     = {eng},
  number       = {10},
  publisher    = {Federation of European Neuroscience Societies and Blackwell Publishing Ltd},
  series       = {Journal of Avian Biology},
  title        = {Remarkably similar migration patterns between different red-backed shrike populations suggest that migration rather than breeding area phenology determines the annual cycle},
  url          = {http://dx.doi.org/10.1111/jav.02475},
  doi          = {10.1111/jav.02475},
  volume       = {51},
  year         = {2020},
}