Data from: Ecology of tern flight in relation to wind, topography and aerodynamic theory
Flight is an economic mode of locomotion, because it is both fast and relatively cheap per unit of distance, enabling birds to migrate long distances and obtain food over large areas. The power required to fly follows a U-shaped function in relation to airspeed, from which context dependent 'op...
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ftzenodo:oai:zenodo.org:4996592 2024-09-15T18:37:44+00:00 Data from: Ecology of tern flight in relation to wind, topography and aerodynamic theory Hedenström, Anders Åkesson, Susanne 2017-07-25 https://doi.org/10.5061/dryad.hj13q unknown Zenodo https://doi.org/10.1098/rstb.2015.0396 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.hj13q oai:zenodo.org:4996592 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Hydroprogne caspia flight mechanics wind compensation Sterna paradisaea Sterna sandvicensis flight speed airspeed Sterna albifrons Sterna hirundo info:eu-repo/semantics/other 2017 ftzenodo https://doi.org/10.5061/dryad.hj13q10.1098/rstb.2015.0396 2024-07-26T00:31:05Z Flight is an economic mode of locomotion, because it is both fast and relatively cheap per unit of distance, enabling birds to migrate long distances and obtain food over large areas. The power required to fly follows a U-shaped function in relation to airspeed, from which context dependent 'optimal' flight speeds can be derived. Crosswinds will displace birds away from their intended track unless they make compensatory adjustments of heading and airspeed.We report on flight track measurements in five geometrically similar tern species ranging one magnitude in body mass, from both migration and the breeding season at the island of O ¨ land in the Baltic Sea. When leaving the southern point of O ¨ land, migrating Arctic and common terns made a 608 shift in track direction, probably guided by a distant landmark. Terns adjusted both airspeed and heading in relation to tail and sidewind, where coastlines facilitated compensation. Airspeed also depended on ecological context (searching versus not searching for food), and it increased with flock size. Species-specific maximum range speed agreed with predicted speeds from a new aerodynamic theory. Our study shows that the selection of airspeed is a behavioural trait that depended on a complex blend of internal and external factors. Tern flight data Data on flight speed measurements of five species of terns. Other/Unknown Material Sterna hirundo Sterna paradisaea Zenodo |
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Hydroprogne caspia flight mechanics wind compensation Sterna paradisaea Sterna sandvicensis flight speed airspeed Sterna albifrons Sterna hirundo |
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Hydroprogne caspia flight mechanics wind compensation Sterna paradisaea Sterna sandvicensis flight speed airspeed Sterna albifrons Sterna hirundo Hedenström, Anders Åkesson, Susanne Data from: Ecology of tern flight in relation to wind, topography and aerodynamic theory |
topic_facet |
Hydroprogne caspia flight mechanics wind compensation Sterna paradisaea Sterna sandvicensis flight speed airspeed Sterna albifrons Sterna hirundo |
description |
Flight is an economic mode of locomotion, because it is both fast and relatively cheap per unit of distance, enabling birds to migrate long distances and obtain food over large areas. The power required to fly follows a U-shaped function in relation to airspeed, from which context dependent 'optimal' flight speeds can be derived. Crosswinds will displace birds away from their intended track unless they make compensatory adjustments of heading and airspeed.We report on flight track measurements in five geometrically similar tern species ranging one magnitude in body mass, from both migration and the breeding season at the island of O ¨ land in the Baltic Sea. When leaving the southern point of O ¨ land, migrating Arctic and common terns made a 608 shift in track direction, probably guided by a distant landmark. Terns adjusted both airspeed and heading in relation to tail and sidewind, where coastlines facilitated compensation. Airspeed also depended on ecological context (searching versus not searching for food), and it increased with flock size. Species-specific maximum range speed agreed with predicted speeds from a new aerodynamic theory. Our study shows that the selection of airspeed is a behavioural trait that depended on a complex blend of internal and external factors. Tern flight data Data on flight speed measurements of five species of terns. |
format |
Other/Unknown Material |
author |
Hedenström, Anders Åkesson, Susanne |
author_facet |
Hedenström, Anders Åkesson, Susanne |
author_sort |
Hedenström, Anders |
title |
Data from: Ecology of tern flight in relation to wind, topography and aerodynamic theory |
title_short |
Data from: Ecology of tern flight in relation to wind, topography and aerodynamic theory |
title_full |
Data from: Ecology of tern flight in relation to wind, topography and aerodynamic theory |
title_fullStr |
Data from: Ecology of tern flight in relation to wind, topography and aerodynamic theory |
title_full_unstemmed |
Data from: Ecology of tern flight in relation to wind, topography and aerodynamic theory |
title_sort |
data from: ecology of tern flight in relation to wind, topography and aerodynamic theory |
publisher |
Zenodo |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.hj13q |
genre |
Sterna hirundo Sterna paradisaea |
genre_facet |
Sterna hirundo Sterna paradisaea |
op_relation |
https://doi.org/10.1098/rstb.2015.0396 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.hj13q oai:zenodo.org:4996592 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.hj13q10.1098/rstb.2015.0396 |
_version_ |
1810482095189917696 |