Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species
Light-level geolocators are currently widely used to track the migration of small-sized birds, but their potentially detrimental effects on survival of highly aerial species have been poorly investigated so far. We recorded capture-recapture histories of 283 common swifts Apus apus and 107 pallid sw...
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Online Access: | http://hdl.handle.net/10255/dryad.157672 https://doi.org/10.5061/dryad.b1t42 |
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ftdryad:oai:v1.datadryad.org:10255/dryad.157672 2023-05-15T14:17:17+02:00 Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species Morganti, Michelangelo Rubolini, D. Akesson, Susanne Bermejo, Ana De la Puente, Javier Lardelli, Roberto Liechti, Felix Boano, Giovanni Tomassetto, Erika Ferri, Mauro Caffi, Mario Saino, Nicola Ambrosini, Roberto western europe 2017-09-15T17:26:04Z http://hdl.handle.net/10255/dryad.157672 https://doi.org/10.5061/dryad.b1t42 unknown doi:10.5061/dryad.b1t42/1 doi:10.5061/dryad.b1t42/2 doi:10.5061/dryad.b1t42/3 doi:10.5061/dryad.b1t42/4 doi:10.1111/jav.01521 doi:10.5061/dryad.b1t42 Morganti M, Rubolini D, Akesson S, Bermejo A, De la Puente J, Lardelli R, Liechti F, Boano G, Tomassetto E, Ferri M, Caffi M, Saino N, Ambrosini R (2018) Effect of light-level geolocators on apparent survival of two highly aerial swift species. Journal of Avian Biology 49(1): jav-01521. http://hdl.handle.net/10255/dryad.157672 geolocator aerial foragers survival capture-mark-recapture Article 2017 ftdryad https://doi.org/10.5061/dryad.b1t42 https://doi.org/10.5061/dryad.b1t42/1 https://doi.org/10.5061/dryad.b1t42/2 https://doi.org/10.5061/dryad.b1t42/3 https://doi.org/10.5061/dryad.b1t42/4 https://doi.org/10.1111/jav.01521 2020-01-01T15:57:06Z Light-level geolocators are currently widely used to track the migration of small-sized birds, but their potentially detrimental effects on survival of highly aerial species have been poorly investigated so far. We recorded capture-recapture histories of 283 common swifts Apus apus and 107 pallid swifts Apus pallidus breeding in 14 colonies in Italy, Spain, Sweden and Switzerland that were deployed with 10 different types of geolocators (‘geolocator birds’), and compared their survival with that of, respectively, 215 common and 101 pallid swifts not equipped with geolocators (‘control birds’). We performed both traditional GLMM using return rate as a proxy for survival and mark-recapture models to estimate survival while accounting for recapture probability. In all the analyses, geolocator birds showed reduced apparent survival compared to controls. The extent of the negative effect on survival differed between the species but the direction of the difference between species was opposite in either type of analysis. Geolocator weight was always lower 3% of body mass or less, and did not affect survival per se. Geolocators with a light-stalk, which is used in some geolocator models to reduce light sensor shading by feathers, decreased apparent survival more than models without light-stalk. Apparent survival of geolocator birds significantly varied among sites, being much higher in northern Europe. Despite in our analyses we could only partly account for variable recapture probabilities among sites and for inter-annual variability in survival, our results generally showed that equipping swifts with geolocators decreased their survival prospects, but also that the magnitude of this effect may depend on species-specific traits. These conclusions are in line with those of other studies on aerial foragers. We suggest that future studies tracking the movements of aerial insectivorous birds should use devices designed to minimize drag. Article in Journal/Newspaper Apus apus Dryad Digital Repository (Duke University) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
geolocator aerial foragers survival capture-mark-recapture |
spellingShingle |
geolocator aerial foragers survival capture-mark-recapture Morganti, Michelangelo Rubolini, D. Akesson, Susanne Bermejo, Ana De la Puente, Javier Lardelli, Roberto Liechti, Felix Boano, Giovanni Tomassetto, Erika Ferri, Mauro Caffi, Mario Saino, Nicola Ambrosini, Roberto Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species |
topic_facet |
geolocator aerial foragers survival capture-mark-recapture |
description |
Light-level geolocators are currently widely used to track the migration of small-sized birds, but their potentially detrimental effects on survival of highly aerial species have been poorly investigated so far. We recorded capture-recapture histories of 283 common swifts Apus apus and 107 pallid swifts Apus pallidus breeding in 14 colonies in Italy, Spain, Sweden and Switzerland that were deployed with 10 different types of geolocators (‘geolocator birds’), and compared their survival with that of, respectively, 215 common and 101 pallid swifts not equipped with geolocators (‘control birds’). We performed both traditional GLMM using return rate as a proxy for survival and mark-recapture models to estimate survival while accounting for recapture probability. In all the analyses, geolocator birds showed reduced apparent survival compared to controls. The extent of the negative effect on survival differed between the species but the direction of the difference between species was opposite in either type of analysis. Geolocator weight was always lower 3% of body mass or less, and did not affect survival per se. Geolocators with a light-stalk, which is used in some geolocator models to reduce light sensor shading by feathers, decreased apparent survival more than models without light-stalk. Apparent survival of geolocator birds significantly varied among sites, being much higher in northern Europe. Despite in our analyses we could only partly account for variable recapture probabilities among sites and for inter-annual variability in survival, our results generally showed that equipping swifts with geolocators decreased their survival prospects, but also that the magnitude of this effect may depend on species-specific traits. These conclusions are in line with those of other studies on aerial foragers. We suggest that future studies tracking the movements of aerial insectivorous birds should use devices designed to minimize drag. |
format |
Article in Journal/Newspaper |
author |
Morganti, Michelangelo Rubolini, D. Akesson, Susanne Bermejo, Ana De la Puente, Javier Lardelli, Roberto Liechti, Felix Boano, Giovanni Tomassetto, Erika Ferri, Mauro Caffi, Mario Saino, Nicola Ambrosini, Roberto |
author_facet |
Morganti, Michelangelo Rubolini, D. Akesson, Susanne Bermejo, Ana De la Puente, Javier Lardelli, Roberto Liechti, Felix Boano, Giovanni Tomassetto, Erika Ferri, Mauro Caffi, Mario Saino, Nicola Ambrosini, Roberto |
author_sort |
Morganti, Michelangelo |
title |
Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species |
title_short |
Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species |
title_full |
Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species |
title_fullStr |
Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species |
title_full_unstemmed |
Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species |
title_sort |
data from: effect of light-level geolocators on apparent survival of two highly aerial swift species |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.157672 https://doi.org/10.5061/dryad.b1t42 |
op_coverage |
western europe |
genre |
Apus apus |
genre_facet |
Apus apus |
op_relation |
doi:10.5061/dryad.b1t42/1 doi:10.5061/dryad.b1t42/2 doi:10.5061/dryad.b1t42/3 doi:10.5061/dryad.b1t42/4 doi:10.1111/jav.01521 doi:10.5061/dryad.b1t42 Morganti M, Rubolini D, Akesson S, Bermejo A, De la Puente J, Lardelli R, Liechti F, Boano G, Tomassetto E, Ferri M, Caffi M, Saino N, Ambrosini R (2018) Effect of light-level geolocators on apparent survival of two highly aerial swift species. Journal of Avian Biology 49(1): jav-01521. http://hdl.handle.net/10255/dryad.157672 |
op_doi |
https://doi.org/10.5061/dryad.b1t42 https://doi.org/10.5061/dryad.b1t42/1 https://doi.org/10.5061/dryad.b1t42/2 https://doi.org/10.5061/dryad.b1t42/3 https://doi.org/10.5061/dryad.b1t42/4 https://doi.org/10.1111/jav.01521 |
_version_ |
1766289162437132288 |