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Orientation and autumn migration routes of juvenile sharp-tailed sandpipers at a staging site in Alaska.

Grönroos, Johanna LU ; Muheim, Rachel LU and Åkesson, Susanne LU (2010) In Journal of Experimental Biology 213(11). p.1829-1835
Abstract
Arctic waders are well known for their impressive long-distance migrations between their high northerly breeding grounds and wintering areas in the Southern hemisphere. Performing such long migrations requires precise orientation mechanisms. We conducted orientation cage experiments with juvenile sharp-tailed sandpipers (Calidris acuminata) to investigate what cues they rely on when departing from Alaska on their long autumn migration flights across the Pacific Ocean to Australasia, and which possible migration routes they could use. Experiments were performed under natural clear skies, total overcast conditions and in manipulated magnetic fields at a staging site in Alaska. Under clear skies the juvenile sharp-tailed sandpipers oriented... (More)
Arctic waders are well known for their impressive long-distance migrations between their high northerly breeding grounds and wintering areas in the Southern hemisphere. Performing such long migrations requires precise orientation mechanisms. We conducted orientation cage experiments with juvenile sharp-tailed sandpipers (Calidris acuminata) to investigate what cues they rely on when departing from Alaska on their long autumn migration flights across the Pacific Ocean to Australasia, and which possible migration routes they could use. Experiments were performed under natural clear skies, total overcast conditions and in manipulated magnetic fields at a staging site in Alaska. Under clear skies the juvenile sharp-tailed sandpipers oriented towards SSE, which coincides well with reported sun compass directions from their breeding grounds in Siberia towards Alaska and could reflect their true migratory direction towards Australasia assuming that they change direction towards SW somewhere along the route. Under overcast skies the sandpipers showed a mean direction towards SW which would lead them to Australasia, if they followed a sun compass route. However, because of unfavourable weather conditions (headwinds) associated with overcast conditions, these south-westerly directions could also reflect local movements. The juvenile sharp-tailed sandpipers responded clearly to the manipulated magnetic field under overcast skies, suggesting the use of a magnetic compass for selecting their courses. (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
sharp-tailed sandpiper, orientation, bird migration, Calidris acuminata, Alaska.
in
Journal of Experimental Biology
volume
213
issue
11
pages
1829 - 1835
publisher
The Company of Biologists Ltd
external identifiers
  • wos:000277701500014
  • scopus:77952713457
ISSN
1477-9145
DOI
10.1242/jeb.040121
language
English
LU publication?
yes
id
b6a03db6-da6c-490d-920f-43006c9e84c2 (old id 1610185)
date added to LUP
2010-06-14 15:26:59
date last changed
2018-06-17 03:04:36
@article{b6a03db6-da6c-490d-920f-43006c9e84c2,
  abstract     = {Arctic waders are well known for their impressive long-distance migrations between their high northerly breeding grounds and wintering areas in the Southern hemisphere. Performing such long migrations requires precise orientation mechanisms. We conducted orientation cage experiments with juvenile sharp-tailed sandpipers (Calidris acuminata) to investigate what cues they rely on when departing from Alaska on their long autumn migration flights across the Pacific Ocean to Australasia, and which possible migration routes they could use. Experiments were performed under natural clear skies, total overcast conditions and in manipulated magnetic fields at a staging site in Alaska. Under clear skies the juvenile sharp-tailed sandpipers oriented towards SSE, which coincides well with reported sun compass directions from their breeding grounds in Siberia towards Alaska and could reflect their true migratory direction towards Australasia assuming that they change direction towards SW somewhere along the route. Under overcast skies the sandpipers showed a mean direction towards SW which would lead them to Australasia, if they followed a sun compass route. However, because of unfavourable weather conditions (headwinds) associated with overcast conditions, these south-westerly directions could also reflect local movements. The juvenile sharp-tailed sandpipers responded clearly to the manipulated magnetic field under overcast skies, suggesting the use of a magnetic compass for selecting their courses.},
  author       = {Grönroos, Johanna and Muheim, Rachel and Åkesson, Susanne},
  issn         = {1477-9145},
  keyword      = {sharp-tailed sandpiper,orientation,bird migration,Calidris acuminata,Alaska.},
  language     = {eng},
  number       = {11},
  pages        = {1829--1835},
  publisher    = {The Company of Biologists Ltd},
  series       = {Journal of Experimental Biology},
  title        = {Orientation and autumn migration routes of juvenile sharp-tailed sandpipers at a staging site in Alaska.},
  url          = {http://dx.doi.org/10.1242/jeb.040121},
  volume       = {213},
  year         = {2010},
}