Coles, Roger B. and Konishi, Masukazu and Pettigrew, John D. (1987) Hearing and Echolocation in the Australian Grey Swiftlet, Collocalia Spodiopygia. Journal of Experimental Biology, 129 . pp. 365-371. ISSN 0022-0949. http://resolver.caltech.edu/CaltechAUTHORS:20120626-084752602
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The frequency sensitivity of hearing in the grey swiftlet, Collocalia spodiopygia, was determined by neuronal recordings from the auditory midbrain (MLD). The most sensitive best frequency response thresholds occurred between 0.8 and 4.7 kHz, with the upper frequency limit near 6 kHz. Spectral analysis of echolocation click pairs revealed energy peaks between 3.0 and 8.0kHz for the foreclick, compared to 4.0-6.0 kHz for the principal click. The relationship between good hearing sensitivity and click energy peaks in the swiftlet extends about an octave higher than it does in the oilbird (Steatornis caripensis).
|Additional Information:||© 1987 by Company of Biologists. Accepted 3 February 1987. This work was completed as part of the 1980 Biosonar Expedition to Chillagoe, Australia. We gratefully acknowledge funding by the NSF (grant no. BNS-79-13968), the assistance of members of the Chillagoe Caving Club, Queensland National Parks and Wildlife Service, and many other individuals whose help was indispensable to the success of the expedition.|
|Subject Keywords:||swiftlet, hearing, echolocation click, midbrain|
|Official Citation:||ROGER B. COLES, MASAKAZU KONISHI and JOHN D. PETTIGREW Hearing and Echolocation in the Australian Grey Swiftlet, Collocalia Spodiopygia J Exp Biol 1987 129:365-371.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||26 Jun 2012 16:32|
|Last Modified:||26 Dec 2012 15:23|
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