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wind tunnel

  • RESEARCH ARTICLE
    Measuring power input, power output and energy conversion efficiency in un-instrumented flying birds
    Linus Hedh, Christopher G. Guglielmo, L. Christoffer Johansson, Jessica E. Deakin, Christian C. Voigt, Anders Hedenström
    Journal of Experimental Biology 2020 223: jeb223545 doi: 10.1242/jeb.223545 Published 28 September 2020

    Summary: Presentation and evaluation of 13C-labelled sodium bicarbonate (NaBi) combined with particle image velocimetry (PIV) for estimation of flight energetics in birds over a wide range of speeds.

  • RESEARCH ARTICLE
    Flight muscle protein damage during endurance flight is related to energy expenditure but not dietary polyunsaturated fatty acids in a migratory bird
    Morag F. Dick, Christopher G. Guglielmo
    Journal of Experimental Biology 2019 222: jeb187708 doi: 10.1242/jeb.187708 Published 1 March 2019

    Summary: Migration is oxidatively challenging for birds, and in yellow-rumped warblers, the oxidative challenge is strongly related to energy expenditure during flight but not dietary long-chain PUFA.

  • RESEARCH ARTICLE
    Effects of experimental manipulation of hematocrit on avian flight performance in high- and low-altitude conditions
    Kang Nian Yap, Morag F. Dick, Christopher G. Guglielmo, Tony D. Williams
    Journal of Experimental Biology 2018 221: jeb191056 doi: 10.1242/jeb.191056 Published 14 November 2018

    Summary: Manipulation of hematocrit in yellow-rumped warblers provides experimental evidence that the relationship between hematocrit and exercise performance is dependent on altitude.

  • RESEARCH ARTICLE
    Kinematic control of male Allen's hummingbird wing trill over a range of flight speeds
    Christopher J. Clark, Emily A. Mistick
    Journal of Experimental Biology 2018 221: jeb173625 doi: 10.1242/jeb.173625 Published 23 July 2018

    Summary: The sexually selected 9 kHz wing trill of male Allen's hummingbirds is substantially louder in maneuvers than in rectilinear flight, and appears to be produced in supination.

  • RESEARCH ARTICLE
    Light oiling of feathers increases flight energy expenditure in a migratory shorebird
    Ivan Maggini, Lisa V. Kennedy, Alexander Macmillan, Kyle H. Elliott, Karen Dean, Christopher G. Guglielmo
    Journal of Experimental Biology 2017 220: 2372-2379; doi: 10.1242/jeb.158220

    Highlighted Article: Light to moderate contamination of feathers with crude oil increases the energy cost of flight by 22–45% and has important implications for all activities requiring flight, including long-distance migration.

  • RESEARCH ARTICLE
    Aerodynamic consequences of wing morphing during emulated take-off and gliding in birds
    Brett Klaassen van Oorschot, Emily A. Mistick, Bret W. Tobalske
    Journal of Experimental Biology 2016 219: 3146-3154; doi: 10.1242/jeb.136721

    Summary: Wing posture has a greater effect on aerodynamic performance during emulated flapping than during emulated gliding. Extended wing morphology (i.e. emarginate primaries) may be more important during take-off and landing than during gliding.

  • RESEARCH ARTICLE
    Wake analysis of aerodynamic components for the glide envelope of a jackdaw (Corvus monedula)
    Marco KleinHeerenbrink, Kajsa Warfvinge, Anders Hedenström
    Journal of Experimental Biology 2016 219: 1572-1581; doi: 10.1242/jeb.132480

    Summary: Measurements of aerodynamic drag on a jackdaw indicate that lift-induced drag increases with wing flexing and with tail use, while tail use also increases body drag.

  • RESEARCH ARTICLE
    Smithornis broadbills produce loud wing song by aeroelastic flutter of medial primary wing feathers
    Christopher J. Clark, Alexander N. G. Kirschel, Louis Hadjioannou, Richard O. Prum
    Journal of Experimental Biology 2016 219: 1069-1075; doi: 10.1242/jeb.131664

    Highlighted Article: Smithornis broadbills produce a loud klaxon-like wing song by aeroelastic flutter of wing feathers P6 and P7, and not the outer primaries P9/P10.

  • RESEARCH ARTICLES
    Impact of elevated CO2 background levels on the host-seeking behaviour of Aedes aegypti
    Shahid Majeed, Sharon Rose Hill, Rickard Ignell
    Journal of Experimental Biology 2014 217: 598-604; doi: 10.1242/jeb.092718
  • RESEARCH ARTICLES
    Hawkmoth flight stability in turbulent vortex streets
    Victor Manuel Ortega-Jimenez, Jeremy S. M. Greeter, Rajat Mittal, Tyson L. Hedrick
    Journal of Experimental Biology 2013 216: 4567-4579; doi: 10.1242/jeb.089672

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