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Hovering Flight in the Pied Flycatcher (Ficedula Hypoleuca)

  • U. M. Norberg

Abstract

Slow-motion films (200 frames/sec) taken in the field on a freely hovering pied flycathcer, Ficedula hypoleuca (Pallas), are used for description of the kinematics and for calculation of an average coefficient of lift, \({{\bar{C}}_{L}}\), in hovering flight. Using Weis-Fogh’s (1972) equations for steady-state aerodynamics, and assuming that the upstroke gives no useful forces, the average lift coefficient is estimated to be about 5. 3. Since this high value of \({{\bar{C}}_{L}}\) is not consistent with steady-state aerodynamics, non-steady-state phenomena must be of large importance.

Keywords

Reversal Point Pied Flycatcher Wing Area Horizontal Straight Line Wing Movement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1975

Authors and Affiliations

  • U. M. Norberg
    • 1
  1. 1.University of GöteborgGöteborgSweden

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