Data from: State-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies
1. Characterizing the spatiotemporal variation of animal behaviour can elucidate the way individuals interact with their environment and allocate energy. Increasing sophistication of tracking technologies paired with novel analytical approaches allows the characterisation of movement dynamics even w...
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ftzenodo:oai:zenodo.org:4994731 2024-09-15T18:41:33+00:00 Data from: State-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies Pirotta, Enrico Katzner, Todd Miller, Tricia A. Duerr, Adam E. Braham, Melissa A. New, Leslie 2019-06-07 https://doi.org/10.5061/dryad.44v9r82 unknown Zenodo https://doi.org/10.1111/1365-2435.13180 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.44v9r82 oai:zenodo.org:4994731 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode raptor hidden state model 3D states Markov chain Monte Carlo GPS-GSM telemetry subsidised flight info:eu-repo/semantics/other 2019 ftzenodo https://doi.org/10.5061/dryad.44v9r8210.1111/1365-2435.13180 2024-07-26T09:40:59Z 1. Characterizing the spatiotemporal variation of animal behaviour can elucidate the way individuals interact with their environment and allocate energy. Increasing sophistication of tracking technologies paired with novel analytical approaches allows the characterisation of movement dynamics even when an individual is not directly observable. 2. In this study, high-resolution movement data collected via global positioning system (GPS) tracking in three dimensions were paired with topographical information and used in a Bayesian state-space model to describe the flight modes of migrating golden eagles (Aquila chrysaetos) in eastern North America. 3. Our model identified five functional behavioural states, two of which were previously undescribed variations on thermal soaring. The other states comprised gliding, perching and orographic soaring. States were discriminated by movement features in the horizontal (step length and turning angle) and vertical (change in altitude) planes, and by the association with ridgelines promoting wind deflection. Tracked eagles spent 2%, 31%, 38%, 9% and 20% of their day time in directed thermal soaring, gliding, convoluted thermal soaring, perching and orographic soaring, respectively. The analysis of the relative occurrence of these flight modes highlighted yearly, seasonal, age, individual and sex differences in flight strategy and performance. Particularly, less energy-efficient orographic soaring was more frequent in autumn, when thermals were less available. Adult birds were also better at optimising energy efficiency than sub-adults. 4. Our approach represents the first example of a state-space model for bird flight mode using altitude data in conjunction with horizontal locations, and is applicable to other flying organisms where similar data are available. The ability to describe animal movements in a three-dimensional habitat is critical to advance our understanding of the functional processes driving animals' decisions. Golden eagle movement data The file includes the ... Other/Unknown Material Aquila chrysaetos golden eagle Zenodo |
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collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
raptor hidden state model 3D states Markov chain Monte Carlo GPS-GSM telemetry subsidised flight |
spellingShingle |
raptor hidden state model 3D states Markov chain Monte Carlo GPS-GSM telemetry subsidised flight Pirotta, Enrico Katzner, Todd Miller, Tricia A. Duerr, Adam E. Braham, Melissa A. New, Leslie Data from: State-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies |
topic_facet |
raptor hidden state model 3D states Markov chain Monte Carlo GPS-GSM telemetry subsidised flight |
description |
1. Characterizing the spatiotemporal variation of animal behaviour can elucidate the way individuals interact with their environment and allocate energy. Increasing sophistication of tracking technologies paired with novel analytical approaches allows the characterisation of movement dynamics even when an individual is not directly observable. 2. In this study, high-resolution movement data collected via global positioning system (GPS) tracking in three dimensions were paired with topographical information and used in a Bayesian state-space model to describe the flight modes of migrating golden eagles (Aquila chrysaetos) in eastern North America. 3. Our model identified five functional behavioural states, two of which were previously undescribed variations on thermal soaring. The other states comprised gliding, perching and orographic soaring. States were discriminated by movement features in the horizontal (step length and turning angle) and vertical (change in altitude) planes, and by the association with ridgelines promoting wind deflection. Tracked eagles spent 2%, 31%, 38%, 9% and 20% of their day time in directed thermal soaring, gliding, convoluted thermal soaring, perching and orographic soaring, respectively. The analysis of the relative occurrence of these flight modes highlighted yearly, seasonal, age, individual and sex differences in flight strategy and performance. Particularly, less energy-efficient orographic soaring was more frequent in autumn, when thermals were less available. Adult birds were also better at optimising energy efficiency than sub-adults. 4. Our approach represents the first example of a state-space model for bird flight mode using altitude data in conjunction with horizontal locations, and is applicable to other flying organisms where similar data are available. The ability to describe animal movements in a three-dimensional habitat is critical to advance our understanding of the functional processes driving animals' decisions. Golden eagle movement data The file includes the ... |
format |
Other/Unknown Material |
author |
Pirotta, Enrico Katzner, Todd Miller, Tricia A. Duerr, Adam E. Braham, Melissa A. New, Leslie |
author_facet |
Pirotta, Enrico Katzner, Todd Miller, Tricia A. Duerr, Adam E. Braham, Melissa A. New, Leslie |
author_sort |
Pirotta, Enrico |
title |
Data from: State-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies |
title_short |
Data from: State-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies |
title_full |
Data from: State-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies |
title_fullStr |
Data from: State-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies |
title_full_unstemmed |
Data from: State-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies |
title_sort |
data from: state-space modelling of the flight behaviour of a soaring bird provides new insights to migratory strategies |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://doi.org/10.5061/dryad.44v9r82 |
genre |
Aquila chrysaetos golden eagle |
genre_facet |
Aquila chrysaetos golden eagle |
op_relation |
https://doi.org/10.1111/1365-2435.13180 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.44v9r82 oai:zenodo.org:4994731 |
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.44v9r8210.1111/1365-2435.13180 |
_version_ |
1810485964998443008 |