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Are flight paths of nocturnal songbird migrants influenced by local coastlines at a peninsula?

Nilsson, Cecilia LU ; Bäckman, Johan LU and Alerstam, Thomas LU (2014) In Current Zoology 60(5). p.660-669
Abstract
By recording nocturnally migrating passerines with tracking radar we have investigated how coastlines affect the migrants’

flight paths. Birds could use coastlines as an orientation aid or as a reference cue to compensate for wind drift while migrating.

However, on the small scale of Falsterbo Peninsula in southern Sweden, we found very little effect of coastlines on migrants

flight paths, irrespective of altitude. We tracked 2 930 migrants in three autumn and two spring seasons, at altitudes from

60 up to 3 000 meters. We compared tracks of migrants flying in three different areas, which correspond to the three main coastlines,

and can demonstrate that the orientation of the tracks did not... (More)
By recording nocturnally migrating passerines with tracking radar we have investigated how coastlines affect the migrants’

flight paths. Birds could use coastlines as an orientation aid or as a reference cue to compensate for wind drift while migrating.

However, on the small scale of Falsterbo Peninsula in southern Sweden, we found very little effect of coastlines on migrants

flight paths, irrespective of altitude. We tracked 2 930 migrants in three autumn and two spring seasons, at altitudes from

60 up to 3 000 meters. We compared tracks of migrants flying in three different areas, which correspond to the three main coastlines,

and can demonstrate that the orientation of the tracks did not differ in a way consistent with the coastlines between the

areas in autumn, and showed only a slight effect in spring. This is in accordance with earlier infrared device monitoring in Falsterbo,

but contrary to earlier visual observations. It supports the view of nocturnally migrating passerines as mainly broad-front

migrants. Even though the coastlines on the scale of the peninsula affected the flight paths very little, it is possible that the coastline

has an effect on a larger regional scale, by migrants avoiding long sea crossings and thereby being funneled towards the peninsula,

but this remains to be investigated. (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
Current Zoology
volume
60
issue
5
pages
660 - 669
publisher
Current Zoology
external identifiers
  • wos:000342355500012
  • scopus:84908240683
ISSN
1674-5507
project
CAnMove
language
English
LU publication?
yes
id
ec3c0ba5-e6a0-48c1-896e-bb7842e47b80 (old id 4698995)
alternative location
http://www.actazool.org/temp/%7BCB170749-D6A1-41DF-97C5-1D8188D76B2C%7D.pdf
date added to LUP
2014-11-05 13:16:04
date last changed
2017-09-24 03:54:38
@article{ec3c0ba5-e6a0-48c1-896e-bb7842e47b80,
  abstract     = {By recording nocturnally migrating passerines with tracking radar we have investigated how coastlines affect the migrants’<br/><br>
flight paths. Birds could use coastlines as an orientation aid or as a reference cue to compensate for wind drift while migrating.<br/><br>
However, on the small scale of Falsterbo Peninsula in southern Sweden, we found very little effect of coastlines on migrants<br/><br>
flight paths, irrespective of altitude. We tracked 2 930 migrants in three autumn and two spring seasons, at altitudes from<br/><br>
60 up to 3 000 meters. We compared tracks of migrants flying in three different areas, which correspond to the three main coastlines,<br/><br>
and can demonstrate that the orientation of the tracks did not differ in a way consistent with the coastlines between the<br/><br>
areas in autumn, and showed only a slight effect in spring. This is in accordance with earlier infrared device monitoring in Falsterbo,<br/><br>
but contrary to earlier visual observations. It supports the view of nocturnally migrating passerines as mainly broad-front<br/><br>
migrants. Even though the coastlines on the scale of the peninsula affected the flight paths very little, it is possible that the coastline<br/><br>
has an effect on a larger regional scale, by migrants avoiding long sea crossings and thereby being funneled towards the peninsula,<br/><br>
but this remains to be investigated.},
  author       = {Nilsson, Cecilia and Bäckman, Johan and Alerstam, Thomas},
  issn         = {1674-5507},
  language     = {eng},
  number       = {5},
  pages        = {660--669},
  publisher    = {Current Zoology},
  series       = {Current Zoology},
  title        = {Are flight paths of nocturnal songbird migrants influenced by local coastlines at a peninsula?},
  volume       = {60},
  year         = {2014},
}