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Wind tunnel as a tool in bird migration research

Author:
  • Anders Hedenström
  • Åke Lindström
Publishing year: 2017-02-10
Language: English
Pages: 37-48
Publication/Series: Journal of Avian Biology1994-01-01+01:00
Volume: 48
Issue: 1
Document type: Journal article
Publisher: Federation of European Neuroscience Societies and Blackwell Publishing Ltd

Abstract english

Wind tunnels, in which birds fly against an artificially generated air flow, have since long been used to evaluate aerodynamic properties of steady bird flight. A new generation of wind tunnels has also allowed the many processes associated with migratory flights to be studied in captivity. We review how wind tunnel studies of aerodynamics and migratory performance together have helped advancing our understanding of bird migration. Current migration theory is based on the power-speed relationship of flight as well as flight range equations, both of which can be evaluated using birds flying in wind tunnels. In addition, and depending on wind tunnel properties, performance during gliding and climbing flight, and effects of air pressure, humidity and turbulence on bird flight has been measured. Long-distance migrant species have been flown repeatedly for up to 16 h non-stop, allowing detailed studies of the energy expenditure, fuel composition, protein turnover, water balance, immunocompetence and stress associated with sustained migratory flights. In addition, wind tunnels allow the fuelling periods between migratory flights to be studied from new angles. We end our review by suggesting several important topics for future wind tunnel studies, ranging from on of the key questions remaining, the efficiency at which chemical power in converted to mechanical power, to new useful avenues, such as improving and calibrating the techniques used for tracking of individual birds in the wild.

Keywords

  • Zoology
  • Behavioral Sciences Biology

Other

Published
  • ISSN: 1600-048X
Åke Lindström
E-mail: ake [dot] lindstrom [at] biol [dot] lu [dot] se

Professor

Biodiversity

+46 46 222 49 68

E-C353

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