Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey
Although it is often assumed that birds strongly prefer tailwinds for their migratory flights, we predict that a strategy of no wind selectivity (traveling independently of winds) may be more favorable than wind selectivity (traveling on tailwind occasions but stopping to rest under headwind occasio...
Published in: | Behavioral Ecology |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Oxford University Press
2006
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Online Access: | https://lup.lub.lu.se/record/159476 https://doi.org/10.1093/beheco/arj054 |
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ftulundlup:oai:lup.lub.lu.se:b1de8ae6-a8e2-44c4-bd49-4e170cfbb1c2 2023-05-15T18:50:56+02:00 Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey Thorup, K Alerstam, Thomas Hake, M Kjellén, Nils 2006 https://lup.lub.lu.se/record/159476 https://doi.org/10.1093/beheco/arj054 eng eng Oxford University Press https://lup.lub.lu.se/record/159476 http://dx.doi.org/10.1093/beheco/arj054 wos:000236819200023 scopus:33645709259 Behavioral Ecology; 17(3), pp 497-502 (2006) ISSN: 1045-2249 Biological Sciences Ecology contributiontojournal/article info:eu-repo/semantics/article text 2006 ftulundlup https://doi.org/10.1093/beheco/arj054 2023-02-01T23:32:59Z Although it is often assumed that birds strongly prefer tailwinds for their migratory flights, we predict that a strategy of no wind selectivity (traveling independently of winds) may be more favorable than wind selectivity (traveling on tailwind occasions but stopping to rest under headwind occasions) for birds with low energy costs of travel relative to rest and for birds that cannot use stopover time for efficient fuel deposition. We test this prediction by analyzing the daily traveling or stopping as recorded by satellite tracking of five ospreys Pandion haliaetus, a species often using energy-saving thermal soaring, during their migration between northern Europe and Africa. Besides wind, precipitation is another weather factor included in the analyses because thermal soaring migrants are expected to stop and rest in rainy weather. In logistic regression analyses, taking into account the effects of latitude, behavior on previous day, season, date, and individual for discriminating between traveling and stopping days, we found a lack of influence of winds, suggesting that the ospreys travel or stop without regard to wind. This lack of wind selectivity under light and moderate winds is in agreement with our prediction. We expect a low degree of wind selectivity and thus regular flights under headwinds also among other types of birds that cannot use stopping time for efficient foraging and fuel deposition. We also found an unexpected lack of influence of precipitation, possibly because of relatively few instances with rainfall in combination with poor geographic precision for estimates of this weather variable. Article in Journal/Newspaper osprey Pandion haliaetus Lund University Publications (LUP) Behavioral Ecology 17 3 497 502 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Biological Sciences Ecology |
spellingShingle |
Biological Sciences Ecology Thorup, K Alerstam, Thomas Hake, M Kjellén, Nils Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey |
topic_facet |
Biological Sciences Ecology |
description |
Although it is often assumed that birds strongly prefer tailwinds for their migratory flights, we predict that a strategy of no wind selectivity (traveling independently of winds) may be more favorable than wind selectivity (traveling on tailwind occasions but stopping to rest under headwind occasions) for birds with low energy costs of travel relative to rest and for birds that cannot use stopover time for efficient fuel deposition. We test this prediction by analyzing the daily traveling or stopping as recorded by satellite tracking of five ospreys Pandion haliaetus, a species often using energy-saving thermal soaring, during their migration between northern Europe and Africa. Besides wind, precipitation is another weather factor included in the analyses because thermal soaring migrants are expected to stop and rest in rainy weather. In logistic regression analyses, taking into account the effects of latitude, behavior on previous day, season, date, and individual for discriminating between traveling and stopping days, we found a lack of influence of winds, suggesting that the ospreys travel or stop without regard to wind. This lack of wind selectivity under light and moderate winds is in agreement with our prediction. We expect a low degree of wind selectivity and thus regular flights under headwinds also among other types of birds that cannot use stopping time for efficient foraging and fuel deposition. We also found an unexpected lack of influence of precipitation, possibly because of relatively few instances with rainfall in combination with poor geographic precision for estimates of this weather variable. |
format |
Article in Journal/Newspaper |
author |
Thorup, K Alerstam, Thomas Hake, M Kjellén, Nils |
author_facet |
Thorup, K Alerstam, Thomas Hake, M Kjellén, Nils |
author_sort |
Thorup, K |
title |
Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey |
title_short |
Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey |
title_full |
Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey |
title_fullStr |
Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey |
title_full_unstemmed |
Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey |
title_sort |
traveling or stopping of migrating birds in relation to wind: an illustration for the osprey |
publisher |
Oxford University Press |
publishDate |
2006 |
url |
https://lup.lub.lu.se/record/159476 https://doi.org/10.1093/beheco/arj054 |
genre |
osprey Pandion haliaetus |
genre_facet |
osprey Pandion haliaetus |
op_source |
Behavioral Ecology; 17(3), pp 497-502 (2006) ISSN: 1045-2249 |
op_relation |
https://lup.lub.lu.se/record/159476 http://dx.doi.org/10.1093/beheco/arj054 wos:000236819200023 scopus:33645709259 |
op_doi |
https://doi.org/10.1093/beheco/arj054 |
container_title |
Behavioral Ecology |
container_volume |
17 |
container_issue |
3 |
container_start_page |
497 |
op_container_end_page |
502 |
_version_ |
1766244710991527936 |