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Home NEWS Science News Biology

Flight of birds can help provide predictions on turbulence, new study suggests

Bioengineer by Bioengineer
November 16, 2022
in Biology
Reading Time: 3 mins read
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A new study led by Swansea University has shown how the flight of birds can offer a meteorological insight into fine scale environmental conditions.

Figure 1

Credit: Emmanouil Lempidakis, Andrew N. Ross, Michael Quetting, Baptiste Garde, Martin Wikelski and Emily L. C. Shepard.

A new study led by Swansea University has shown how the flight of birds can offer a meteorological insight into fine scale environmental conditions.

Whilst all animals that fly need to respond to atmospheric turbulence, little is known about how this is accomplished, with traditional methods for measuring it in nature being logistically difficult and costly.

Academics from Swansea University collaborated on a new approach with the University of Leeds, the Max Planck Institute of Animal Behavior and the University of Konstanz, which involved flying a small aircraft along and close to the track of pigeons as they travelled back to their loft, measuring the turbulence levels on the study site during each journey.

Using GPS, barometric pressure and acceleration data loggers attached to the birds, the team looked at whether fine scale changes in flight altitude and motion could be used as proxies of turbulence strength, comparing this to the turbulence measured by the anemometer onboard the aircraft.

The results, published in the Journal of the Royal Society Interface, show the unsteadiness of the birds, as they bump up and down, can be used to understand how turbulent the conditions are.

This new research unlocks the possibility of using bird-borne sensors to calculate freestream turbulence in nature, which would be a great advantage in inaccessible areas and conditions, like how seal-borne sensors are used to measure salinity and sea temperature under ice caps.

Lead-researcher Dr Emmanouil Lempidakis, who conducted this research as part of his PhD, said: “Although the birds choose when and where to fly, this method can provide us with an understanding of fine scale environmental conditions without the cost of other approaches, and enables to look at turbulence from a different perspective.”

The team are already looking at ways to use this newly acquired knowledge to investigate how the flight effort and route selection of these birds is potentially influenced by turbulence.

Professor Emily L. C. Shepard, an expert in the movement ecology of wild animals, explained: “What was really interesting was that pigeons could fly in conditions that were too turbulent for the ultralight, but there was also some suggestion birds avoided certain routes with very high turbulence. This raises the question of how birds can cope with high turbulence and also how it affects their flight costs.”

 

END

 

Note to editors:

When reporting this story, please use Swansea University hyperlinks.

Founded in 1920, Swansea University is a world-class, research-led, dual campus university offering an exceptional student experience to more than 22,000 students. The University celebrated its centenary in 2020 and commemorative events to mark the occasion will continue in 2021. The 2014 Research Excellence Framework ranked Swansea University 26th in the UK for research excellence, and in 2018 the University achieved a gold rating in the Teaching Excellence Framework (TEF). Swansea is a UK top 25 institution, having climbed to 24th the Guardian University Guide 2021, and was ranked 6th for overall student satisfaction in the National Student Survey 2020. Swansea currently offers around 450 undergraduate courses and 350 postgraduate courses.

Swansea University is a registered charity. No. 1138342.

 

For more information:

Ffion White at Swansea University Press Office Call 01792 602706 or Email: [email protected]

Follow us on Twitter:  www.twitter.com/SwanseaUni

Find us on Facebook: www.facebook.com/swanseauniversity



Journal

Journal of The Royal Society Interface

DOI

10.1098/rsif.2022.0577

Method of Research

Observational study

Subject of Research

Animals

Article Title

Estimating fine-scale changes in turbulence using the movements of a flapping flier

Article Publication Date

9-Nov-2022

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