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Individuality in bird migration: routes and timing

Vardanis, Yannis LU ; Klaassen, Raymond LU ; Strandberg, Roine LU and Alerstam, Thomas LU (2011) In Biology Letters 7. p.502-505
Abstract
The exploration of animal migration has entered a new era with individual-based tracking during multiple years. Here, we investigated repeated migratory journeys of a long-distance migrating bird, the marsh harrier Circus aeruginosus, in order to analyse the variation within and between individuals with respect to routes and timing. We found that there was a stronger individual repeatability in time than in space. Thus, the annual timing of migration varied much less between repeated journeys of the same individual than between different individuals, while there was considerable variation in the routes of the same individual on repeated journeys. The overall contrast in repeatability between time and space was unexpected and may be owing... (More)
The exploration of animal migration has entered a new era with individual-based tracking during multiple years. Here, we investigated repeated migratory journeys of a long-distance migrating bird, the marsh harrier Circus aeruginosus, in order to analyse the variation within and between individuals with respect to routes and timing. We found that there was a stronger individual repeatability in time than in space. Thus, the annual timing of migration varied much less between repeated journeys of the same individual than between different individuals, while there was considerable variation in the routes of the same individual on repeated journeys. The overall contrast in repeatability between time and space was unexpected and may be owing to strong endogenous control of timing, while short-term variation in environmental conditions (weather and habitat) might promote route flexibility. The individual variation in migration routes indicates that the birds navigate mainly by other means than detailed route recapitulation based on landmark recognition. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
avian migration, satellite-tracking, repeatability, routes, timing
in
Biology Letters
volume
7
pages
502 - 505
publisher
Royal Society
external identifiers
  • wos:000292639100008
  • scopus:80051698662
ISSN
1744-9561
DOI
10.1098/rsbl.2010.1180
project
CAnMove
language
English
LU publication?
yes
id
638e2462-c416-4c10-87bc-fb884c2d964f (old id 1832017)
date added to LUP
2011-03-09 12:33:49
date last changed
2017-09-24 03:14:48
@article{638e2462-c416-4c10-87bc-fb884c2d964f,
  abstract     = {The exploration of animal migration has entered a new era with individual-based tracking during multiple years. Here, we investigated repeated migratory journeys of a long-distance migrating bird, the marsh harrier Circus aeruginosus, in order to analyse the variation within and between individuals with respect to routes and timing. We found that there was a stronger individual repeatability in time than in space. Thus, the annual timing of migration varied much less between repeated journeys of the same individual than between different individuals, while there was considerable variation in the routes of the same individual on repeated journeys. The overall contrast in repeatability between time and space was unexpected and may be owing to strong endogenous control of timing, while short-term variation in environmental conditions (weather and habitat) might promote route flexibility. The individual variation in migration routes indicates that the birds navigate mainly by other means than detailed route recapitulation based on landmark recognition.},
  author       = {Vardanis, Yannis and Klaassen, Raymond and Strandberg, Roine and Alerstam, Thomas},
  issn         = {1744-9561},
  keyword      = {avian migration,satellite-tracking,repeatability,routes,timing},
  language     = {eng},
  pages        = {502--505},
  publisher    = {Royal Society},
  series       = {Biology Letters},
  title        = {Individuality in bird migration: routes and timing},
  url          = {http://dx.doi.org/10.1098/rsbl.2010.1180},
  volume       = {7},
  year         = {2011},
}