Avian Flight

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OUP Oxford, Aug 10, 2006 - Science - 269 pages
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Bird flight has always intrigued mankind. This book provides an up to date account of our existing knowledge on the subject, as well as offering new insights and challenging some established views. A brief history of the science of flight introduces the basic physical principles governing aerial locomotion. A treatment of flight-related functional morphology concentrates on the difference in shape of the arm and hand part of the wings, on the structure and function of tails, and on the shape of the body. The anatomy and mechanical properties of feathers receive special attention. Aerodynamic principles used by birds are explained in theory by simply applying Newton's laws, and in practice by showing the direction and velocity of the attached flow around an arm wing cross section and of the leading edge vortex flow above a hand wing. The Archaeopteryx fossils remain crucial in our understanding of the evolution of bird flight despite the recent discovery of a range of well-preserved ancient birds. A novel insight into the interactions between wings and air challenges established theories relating to the origin of bird flight. Take-off, flapping flight, gliding and landing are the basic ingredients of bird flight, and birds use a variety of flight styles from hovering to soaring. Flight muscles consisting of mosaics of specialised fibres are the engines that generate the force required to keep the wings and tail in the gliding configuration and perform work during flapping motion. The energy required to fly can be estimated or measured directly, and a comparison of the empirical results provides insights into the trend in metabolic costs of flight of birds varying in shape and mass from hummingbirds to albatrosses.
 

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Beak, head, and neck might not be "handicaps" to flight; those upfront structures might so treat the air stream for beneficial use by main wings. Perhaps the canard structures are assets to flight; Nature seems to have let the arrangement be the winner.

Contents

Acquisition of knowledge
1
The flight apparatus
26
Feathers for flight
48
Aerodynamics
68
Evolution of bird flight
94
Bird flight modes
122
The bird flight engine
161
Energy required for flight
182
Comparing the metabolic costs of flight
212
Appendix 1
233
Index
263
Copyright

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About the author (2006)


John J Videler holds two academic positions, Professor of Evolutionary Mechanics at Leiden University, and Professor of Marine Zoology at Groningen University, The Netherlands.

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