Timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills
The post‐fledging dependence period (PFDP), which extends from a fledgling's first flight out of the nest to its departure from the parents' territory, is crucial in the lifecycle of birds. During this period, juveniles develop their flight and foraging skills to become fully independent....
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ftdoajarticles:oai:doaj.org/article:7141587f2900425e8ae9c802aacc7097 2023-08-20T04:10:24+02:00 Timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills Arzhela Hemery Lucas Mugnier‐Lavorel Christian Itty Olivier Duriez Aurélien Besnard 2023-07-01T00:00:00Z https://doi.org/10.1111/jav.03111 https://doaj.org/article/7141587f2900425e8ae9c802aacc7097 EN eng Wiley https://doi.org/10.1111/jav.03111 https://doaj.org/toc/0908-8857 https://doaj.org/toc/1600-048X 1600-048X 0908-8857 doi:10.1111/jav.03111 https://doaj.org/article/7141587f2900425e8ae9c802aacc7097 Journal of Avian Biology, Vol 2023, Iss 7-8, Pp n/a-n/a (2023) Aquila chrysaetos dispersal flight GPS tracking parent–offspring conflict post-fledging dependence period Biology (General) QH301-705.5 General. Including nature conservation geographical distribution QH1-199.5 article 2023 ftdoajarticles https://doi.org/10.1111/jav.03111 2023-07-30T00:37:21Z The post‐fledging dependence period (PFDP), which extends from a fledgling's first flight out of the nest to its departure from the parents' territory, is crucial in the lifecycle of birds. During this period, juveniles develop their flight and foraging skills to become fully independent. Despite the importance of this life stage in basic bird ecology and conservation, it remains largely overlooked – notably its link with the acquisition of flight skills. In this study, we modeled the variation in seven proxies describing flight skills of 84 GPS‐tracked golden eagle juveniles in France between 2016 and 2020. Juveniles had a long but highly variable PFDP, averaging 177.9 (± 62.2) days after departure from the nest. This period is divided into two phases: a first phase of rapid increase in flight skills over the first 60 days after departure from the nest, followed by a plateau in which flight skills no longer develop until independence. These results suggest that the full development of flight skills is not a constraining factor during the PFDP and that it is advantageous for juveniles to choose to remain in their natal territory. We posit that parents' tolerance of fledged juveniles is a type of parental care that may maximize their own fitness by improving the survival of their descendants. In future studies, it may be of interest to investigate the factors that may explain the high variability in the duration of this stage between individuals within the same population. Article in Journal/Newspaper Aquila chrysaetos golden eagle Directory of Open Access Journals: DOAJ Articles Journal of Avian Biology 2023 7-8 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Aquila chrysaetos dispersal flight GPS tracking parent–offspring conflict post-fledging dependence period Biology (General) QH301-705.5 General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Aquila chrysaetos dispersal flight GPS tracking parent–offspring conflict post-fledging dependence period Biology (General) QH301-705.5 General. Including nature conservation geographical distribution QH1-199.5 Arzhela Hemery Lucas Mugnier‐Lavorel Christian Itty Olivier Duriez Aurélien Besnard Timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills |
topic_facet |
Aquila chrysaetos dispersal flight GPS tracking parent–offspring conflict post-fledging dependence period Biology (General) QH301-705.5 General. Including nature conservation geographical distribution QH1-199.5 |
description |
The post‐fledging dependence period (PFDP), which extends from a fledgling's first flight out of the nest to its departure from the parents' territory, is crucial in the lifecycle of birds. During this period, juveniles develop their flight and foraging skills to become fully independent. Despite the importance of this life stage in basic bird ecology and conservation, it remains largely overlooked – notably its link with the acquisition of flight skills. In this study, we modeled the variation in seven proxies describing flight skills of 84 GPS‐tracked golden eagle juveniles in France between 2016 and 2020. Juveniles had a long but highly variable PFDP, averaging 177.9 (± 62.2) days after departure from the nest. This period is divided into two phases: a first phase of rapid increase in flight skills over the first 60 days after departure from the nest, followed by a plateau in which flight skills no longer develop until independence. These results suggest that the full development of flight skills is not a constraining factor during the PFDP and that it is advantageous for juveniles to choose to remain in their natal territory. We posit that parents' tolerance of fledged juveniles is a type of parental care that may maximize their own fitness by improving the survival of their descendants. In future studies, it may be of interest to investigate the factors that may explain the high variability in the duration of this stage between individuals within the same population. |
format |
Article in Journal/Newspaper |
author |
Arzhela Hemery Lucas Mugnier‐Lavorel Christian Itty Olivier Duriez Aurélien Besnard |
author_facet |
Arzhela Hemery Lucas Mugnier‐Lavorel Christian Itty Olivier Duriez Aurélien Besnard |
author_sort |
Arzhela Hemery |
title |
Timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills |
title_short |
Timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills |
title_full |
Timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills |
title_fullStr |
Timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills |
title_full_unstemmed |
Timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills |
title_sort |
timing of departure from natal areas by golden eagles is not constrained by acquisition of flight skills |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1111/jav.03111 https://doaj.org/article/7141587f2900425e8ae9c802aacc7097 |
genre |
Aquila chrysaetos golden eagle |
genre_facet |
Aquila chrysaetos golden eagle |
op_source |
Journal of Avian Biology, Vol 2023, Iss 7-8, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1111/jav.03111 https://doaj.org/toc/0908-8857 https://doaj.org/toc/1600-048X 1600-048X 0908-8857 doi:10.1111/jav.03111 https://doaj.org/article/7141587f2900425e8ae9c802aacc7097 |
op_doi |
https://doi.org/10.1111/jav.03111 |
container_title |
Journal of Avian Biology |
container_volume |
2023 |
container_issue |
7-8 |
_version_ |
1774724583302103040 |