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J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2014 Oct;200(10):863-70. doi: 10.1007/s00359-014-0929-8. Epub 2014 Aug 5.

Audiogram of the chicken (Gallus gallus domesticus) from 2 Hz to 9 kHz.

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1
Department of Psychology, University of Nebraska at Kearney, Kearney, NE, 68849, USA.

Abstract

The pure-tone thresholds of four domestic female chickens were determined from 2 Hz to 9 kHz using the method of conditioned suppression/avoidance. At a level of 60 dB sound pressure level (re 20 μN/m(2)), their hearing range extends from 9.1 Hz to 7.2 kHz, with a best sensitivity of 2.6 dB at 2 kHz. Chickens have better sensitivity than humans for frequencies below 64 Hz; indeed, their sensitivity to infrasound exceeds that of the homing pigeon. However, when threshold testing moved to the lower frequencies, the animals required additional training before their final thresholds were obtained, suggesting that they may perceive frequencies below 64 Hz differently than higher frequencies.

PMID:
25092127
DOI:
10.1007/s00359-014-0929-8
[Indexed for MEDLINE]
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