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Effect of harness design for tag attachment on the flight performance of five soaring species

Arianna Longarini, Olivier Duriez, Emily Shepard Orcid Logo, Kamran Safi, Martin Wikelski, Martina Scacco

Movement Ecology, Volume: 11, Issue: 1

Swansea University Author: Emily Shepard Orcid Logo

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DOI (Published version): 10.1186/s40462-023-00408-y

Abstract

BackgroundBio-logging devices play a fundamental and indispensable role in movement ecology studies, particularly in the wild. However, researchers are aware of the influence that attaching devices can have on animals, particularly on their behaviour, energy expenditure and survival. The way a devic...

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Published in: Movement Ecology
ISSN: 2051-3933
Published: Springer Science and Business Media LLC 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa65703
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fullrecord <?xml version="1.0" encoding="utf-8"?><rfc1807 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><bib-version>v2</bib-version><id>65703</id><entry>2024-02-26</entry><title>Effect of harness design for tag attachment on the flight performance of five soaring species</title><swanseaauthors><author><sid>54729295145aa1ea56d176818d51ed6a</sid><ORCID>0000-0001-7325-6398</ORCID><firstname>Emily</firstname><surname>Shepard</surname><name>Emily Shepard</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2024-02-26</date><deptcode>SBI</deptcode><abstract>BackgroundBio-logging devices play a fundamental and indispensable role in movement ecology studies, particularly in the wild. However, researchers are aware of the influence that attaching devices can have on animals, particularly on their behaviour, energy expenditure and survival. The way a device is attached to an animal’s body has also potential consequences for the collected data, and quantifying the type and magnitude of such potential effects is fundamental to enable researchers to combine and compare data from different studies, as much as it is to improve animal welfare. For over two decades, large terrestrial birds have been in the focus of long-term movement ecology research, employing bio-logging devices attached with different types of harnesses. However, comparative studies investigating the effects of different harness types used on these species are scarce.MethodsIn this study, we tested for potential differences in data collected by two commonly used harness types, backpack and leg-loop, on the flight performance of 10 individuals from five soaring raptor species, equipped with high resolution bio-logging devices, in the same area and time. We explored the effect of harness type on vertical speed, airspeed, glide ratio, height above sea level, distance travelled, proportion of soaring and flapping behaviour, and VeDBA (a proxy for energy expenditure) between and within individuals, all used as fine-scale measures of flight performance.ResultsBirds equipped with leg-loops climbed up to 0.36 ms faster, reached 25.9% greater altitudes while soaring and spent less time in active flight compared to birds equipped with backpacks, suggesting that backpack harnesses, compared to leg-loops, might cause additional drag affecting the birds’ flight performance. A lower VeDBA, a lower rate of sinking while gliding and slightly higher glide ratio and airspeeds were also indicative of less drag using leg-loops, even though the effect on these parameters was comparable to inter-individual differences.ConclusionsOur results add to the existing literature highlighting the design-related advantages of leg-loops, and support the use of leg-loops as a better alternative to backpack harnesses for large soaring birds, when possible. Our study also highlights how apparently small changes in device attachment can lead to notable improvements in tagging practice, with implications for animal welfare, data interpretation and comparability.</abstract><type>Journal Article</type><journal>Movement Ecology</journal><volume>11</volume><journalNumber>1</journalNumber><paginationStart/><paginationEnd/><publisher>Springer Science and Business Media LLC</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint/><issnElectronic>2051-3933</issnElectronic><keywords>Tagging methods, Harness type, Backpack, Leg-loop, Soaring birds, Bio-logging, Flight performance</keywords><publishedDay>6</publishedDay><publishedMonth>7</publishedMonth><publishedYear>2023</publishedYear><publishedDate>2023-07-06</publishedDate><doi>10.1186/s40462-023-00408-y</doi><url/><notes/><college>COLLEGE NANME</college><department>Biosciences</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>SBI</DepartmentCode><institution>Swansea University</institution><apcterm>Another institution paid the OA fee</apcterm><funders>Open Access funding enabled and organized by Projekt DEAL. AL was supported by the Erasmus+ Scholarship for Traineeship. We acknowledge funding from the Max Planck Institute of Animal Behavior. MS was supported by the German Academic Exchange Service (DAAD) and by the International Max Planck Research School for Organismal Biology. ES was supported by the European Research Council under the European Union’s Horizon 2020 research and innovation program (Grant 715874).</funders><projectreference/><lastEdited>2024-03-25T14:16:21.1362177</lastEdited><Created>2024-02-26T16:02:22.6513490</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Biosciences, Geography and Physics - Biosciences</level></path><authors><author><firstname>Arianna</firstname><surname>Longarini</surname><order>1</order></author><author><firstname>Olivier</firstname><surname>Duriez</surname><order>2</order></author><author><firstname>Emily</firstname><surname>Shepard</surname><orcid>0000-0001-7325-6398</orcid><order>3</order></author><author><firstname>Kamran</firstname><surname>Safi</surname><order>4</order></author><author><firstname>Martin</firstname><surname>Wikelski</surname><order>5</order></author><author><firstname>Martina</firstname><surname>Scacco</surname><order>6</order></author></authors><documents><document><filename>65703__29833__d7d4383f105d43abaebfc108ea0c9ba8.pdf</filename><originalFilename>65703.VOR.pdf</originalFilename><uploaded>2024-03-25T14:14:56.6841430</uploaded><type>Output</type><contentLength>12567024</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>© The Author(s) 2023.This article is licensed under a Creative Commons Attribution 4.0 International License</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>http://creativecommons.org/licenses/by/4.0/</licence></document></documents><OutputDurs/></rfc1807>
spelling v2 65703 2024-02-26 Effect of harness design for tag attachment on the flight performance of five soaring species 54729295145aa1ea56d176818d51ed6a 0000-0001-7325-6398 Emily Shepard Emily Shepard true false 2024-02-26 SBI BackgroundBio-logging devices play a fundamental and indispensable role in movement ecology studies, particularly in the wild. However, researchers are aware of the influence that attaching devices can have on animals, particularly on their behaviour, energy expenditure and survival. The way a device is attached to an animal’s body has also potential consequences for the collected data, and quantifying the type and magnitude of such potential effects is fundamental to enable researchers to combine and compare data from different studies, as much as it is to improve animal welfare. For over two decades, large terrestrial birds have been in the focus of long-term movement ecology research, employing bio-logging devices attached with different types of harnesses. However, comparative studies investigating the effects of different harness types used on these species are scarce.MethodsIn this study, we tested for potential differences in data collected by two commonly used harness types, backpack and leg-loop, on the flight performance of 10 individuals from five soaring raptor species, equipped with high resolution bio-logging devices, in the same area and time. We explored the effect of harness type on vertical speed, airspeed, glide ratio, height above sea level, distance travelled, proportion of soaring and flapping behaviour, and VeDBA (a proxy for energy expenditure) between and within individuals, all used as fine-scale measures of flight performance.ResultsBirds equipped with leg-loops climbed up to 0.36 ms faster, reached 25.9% greater altitudes while soaring and spent less time in active flight compared to birds equipped with backpacks, suggesting that backpack harnesses, compared to leg-loops, might cause additional drag affecting the birds’ flight performance. A lower VeDBA, a lower rate of sinking while gliding and slightly higher glide ratio and airspeeds were also indicative of less drag using leg-loops, even though the effect on these parameters was comparable to inter-individual differences.ConclusionsOur results add to the existing literature highlighting the design-related advantages of leg-loops, and support the use of leg-loops as a better alternative to backpack harnesses for large soaring birds, when possible. Our study also highlights how apparently small changes in device attachment can lead to notable improvements in tagging practice, with implications for animal welfare, data interpretation and comparability. Journal Article Movement Ecology 11 1 Springer Science and Business Media LLC 2051-3933 Tagging methods, Harness type, Backpack, Leg-loop, Soaring birds, Bio-logging, Flight performance 6 7 2023 2023-07-06 10.1186/s40462-023-00408-y COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University Another institution paid the OA fee Open Access funding enabled and organized by Projekt DEAL. AL was supported by the Erasmus+ Scholarship for Traineeship. We acknowledge funding from the Max Planck Institute of Animal Behavior. MS was supported by the German Academic Exchange Service (DAAD) and by the International Max Planck Research School for Organismal Biology. ES was supported by the European Research Council under the European Union’s Horizon 2020 research and innovation program (Grant 715874). 2024-03-25T14:16:21.1362177 2024-02-26T16:02:22.6513490 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Arianna Longarini 1 Olivier Duriez 2 Emily Shepard 0000-0001-7325-6398 3 Kamran Safi 4 Martin Wikelski 5 Martina Scacco 6 65703__29833__d7d4383f105d43abaebfc108ea0c9ba8.pdf 65703.VOR.pdf 2024-03-25T14:14:56.6841430 Output 12567024 application/pdf Version of Record true © The Author(s) 2023.This article is licensed under a Creative Commons Attribution 4.0 International License true eng http://creativecommons.org/licenses/by/4.0/
title Effect of harness design for tag attachment on the flight performance of five soaring species
spellingShingle Effect of harness design for tag attachment on the flight performance of five soaring species
Emily Shepard
title_short Effect of harness design for tag attachment on the flight performance of five soaring species
title_full Effect of harness design for tag attachment on the flight performance of five soaring species
title_fullStr Effect of harness design for tag attachment on the flight performance of five soaring species
title_full_unstemmed Effect of harness design for tag attachment on the flight performance of five soaring species
title_sort Effect of harness design for tag attachment on the flight performance of five soaring species
author_id_str_mv 54729295145aa1ea56d176818d51ed6a
author_id_fullname_str_mv 54729295145aa1ea56d176818d51ed6a_***_Emily Shepard
author Emily Shepard
author2 Arianna Longarini
Olivier Duriez
Emily Shepard
Kamran Safi
Martin Wikelski
Martina Scacco
format Journal article
container_title Movement Ecology
container_volume 11
container_issue 1
publishDate 2023
institution Swansea University
issn 2051-3933
doi_str_mv 10.1186/s40462-023-00408-y
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description BackgroundBio-logging devices play a fundamental and indispensable role in movement ecology studies, particularly in the wild. However, researchers are aware of the influence that attaching devices can have on animals, particularly on their behaviour, energy expenditure and survival. The way a device is attached to an animal’s body has also potential consequences for the collected data, and quantifying the type and magnitude of such potential effects is fundamental to enable researchers to combine and compare data from different studies, as much as it is to improve animal welfare. For over two decades, large terrestrial birds have been in the focus of long-term movement ecology research, employing bio-logging devices attached with different types of harnesses. However, comparative studies investigating the effects of different harness types used on these species are scarce.MethodsIn this study, we tested for potential differences in data collected by two commonly used harness types, backpack and leg-loop, on the flight performance of 10 individuals from five soaring raptor species, equipped with high resolution bio-logging devices, in the same area and time. We explored the effect of harness type on vertical speed, airspeed, glide ratio, height above sea level, distance travelled, proportion of soaring and flapping behaviour, and VeDBA (a proxy for energy expenditure) between and within individuals, all used as fine-scale measures of flight performance.ResultsBirds equipped with leg-loops climbed up to 0.36 ms faster, reached 25.9% greater altitudes while soaring and spent less time in active flight compared to birds equipped with backpacks, suggesting that backpack harnesses, compared to leg-loops, might cause additional drag affecting the birds’ flight performance. A lower VeDBA, a lower rate of sinking while gliding and slightly higher glide ratio and airspeeds were also indicative of less drag using leg-loops, even though the effect on these parameters was comparable to inter-individual differences.ConclusionsOur results add to the existing literature highlighting the design-related advantages of leg-loops, and support the use of leg-loops as a better alternative to backpack harnesses for large soaring birds, when possible. Our study also highlights how apparently small changes in device attachment can lead to notable improvements in tagging practice, with implications for animal welfare, data interpretation and comparability.
published_date 2023-07-06T14:16:17Z
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score 11.016235

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