Advanced

Migration Along Orthodromic Sun Compass Routes by Arctic Birds

Alerstam, Thomas LU ; Gudmundsson, Gudmundur A.; Green, Martin LU and Hedenström, Anders LU (2001) In Science 291(5502). p.300-303
Abstract
Flight directions of birds migrating at high geographic and magnetic latitudes can be used to test bird orientation by celestial or geomagnetic compass systems under polar conditions. Migration patterns of arctic shorebirds, revealed by tracking radar studies during an icebreaker expedition along the Northwest Passage in 1999, support predicted sun compass trajectories but cannot be reconciled with orientation along either geographic or magnetic loxodromes (rhumb lines). Sun compass routes are similar to orthodromes (great circle routes) at high latitudes, showing changing geographic courses as the birds traverse longitudes and their internal clock gets out of phase with local time. These routes bring the shorebirds from high arctic Canada... (More)
Flight directions of birds migrating at high geographic and magnetic latitudes can be used to test bird orientation by celestial or geomagnetic compass systems under polar conditions. Migration patterns of arctic shorebirds, revealed by tracking radar studies during an icebreaker expedition along the Northwest Passage in 1999, support predicted sun compass trajectories but cannot be reconciled with orientation along either geographic or magnetic loxodromes (rhumb lines). Sun compass routes are similar to orthodromes (great circle routes) at high latitudes, showing changing geographic courses as the birds traverse longitudes and their internal clock gets out of phase with local time. These routes bring the shorebirds from high arctic Canada to the east coast of North America, from which they make transoceanic flights to South America. The observations are also consistent with a migration link between Siberia and the Beaufort Sea region by way of sun compass routes across the Arctic Ocean. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Science
volume
291
issue
5502
pages
300 - 303
publisher
The American Association for the Advancement of Science
external identifiers
  • wos:000166352900044
  • scopus:0035847086
ISSN
1095-9203
DOI
language
English
LU publication?
yes
id
43e50a3b-cd50-40e1-8513-e0e47e0aac60 (old id 131552)
alternative location
http://dx.doi.org/10.1126/science.291.5502.300
date added to LUP
2007-06-21 14:25:43
date last changed
2018-06-17 04:41:10
@article{43e50a3b-cd50-40e1-8513-e0e47e0aac60,
  abstract     = {Flight directions of birds migrating at high geographic and magnetic latitudes can be used to test bird orientation by celestial or geomagnetic compass systems under polar conditions. Migration patterns of arctic shorebirds, revealed by tracking radar studies during an icebreaker expedition along the Northwest Passage in 1999, support predicted sun compass trajectories but cannot be reconciled with orientation along either geographic or magnetic loxodromes (rhumb lines). Sun compass routes are similar to orthodromes (great circle routes) at high latitudes, showing changing geographic courses as the birds traverse longitudes and their internal clock gets out of phase with local time. These routes bring the shorebirds from high arctic Canada to the east coast of North America, from which they make transoceanic flights to South America. The observations are also consistent with a migration link between Siberia and the Beaufort Sea region by way of sun compass routes across the Arctic Ocean.},
  author       = {Alerstam, Thomas and Gudmundsson, Gudmundur A. and Green, Martin and Hedenström, Anders},
  issn         = {1095-9203},
  language     = {eng},
  number       = {5502},
  pages        = {300--303},
  publisher    = {The American Association for the Advancement of Science},
  series       = {Science},
  title        = {Migration Along Orthodromic Sun Compass Routes by Arctic Birds},
  url          = {http://dx.doi.org/},
  volume       = {291},
  year         = {2001},
}