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Keywords: benchmark.
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Journal Articles
J Exp Biol (2001) 204 (19): 3283–3294.
Published: 1 October 2001
...C. J. Pennycuick SUMMARY Sixteen species of birds passing Falsterbo in southwest Sweden during the autumn migration season were observed using short-range optical methods. Air speeds and wingbeat frequencies were measured, reduced to sea level, and compared with benchmark values computed...