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Science 27 April 1979:
Vol. 204. no. 4391, pp. 425 - 427
DOI: 10.1126/science.441731
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Articles

Science, Vol 204, Issue 4391, 425-427
Copyright © 1979 by American Association for the Advancement of Science

articles

The oilbird: hearing and echolocation

M Konishi and EI Knudsen

Oilbirds can navigate in total darkness by echolocation. The sound energy in their sonar cries is unevenly distributed over the range from about 1 to 15 kilohertz, with a dominant frequency range of 1.5 to 2.5 kilohertz. This corresponds to the most sensitive range of their hearing as determined by neurophysiological methods. Behavioral tests in their home cave indicate that the smallest object avoided by this is a disk 20 centimeters in diameter.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Environmental influences in the evolution of tetrapod hearing sensitivity and middle ear tuning.
M. Gridi-Papp and P. M. Narins (2009)
Integr. Comp. Biol. 49, 702-716
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Science. ISSN 0036-8075 (print), 1095-9203 (online)