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Audiogram of the mallard duck (Anas platyrhynchos) from 16 Hz to 9 kHz

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Abstract

The pure-tone thresholds of three mallard ducks were determined from 16 Hz to 9 kHz. The purpose was to determine whether the mallard duck hears infrasound, which then may potentially be used for navigation, similar to how it is proposed that pigeons use it for homing. At a level of 60 dB sound pressure level (re 20 μN/m2), their hearing range extends 6.85 octaves from 66 Hz to 7.6 kHz, with a best sensitivity of 12.5 dB at 2 kHz. However, at no frequency, including the lowest tested, were the ducks’ thresholds lower than those of humans. Therefore, unlike pigeons and chickens, but like budgerigars, mallard ducks do not hear infrasound. Thus, the fact that a bird may fly long distances does not necessarily indicate that it hears infrasound.

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Acknowledgements

I thank Ashley Sanchez and Thais Murua for their assistance in the construction of test equipment and daily care of the animals used in this study. The use of the animals in this study was approved by the University of Nebraska-Kearney Animal Care and Use Committee.

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Correspondence to Evan M. Hill.

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The author declares that they have no conflicts of interest.

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Funding was provided by the University of Nebraska-Kearney Office of Sponsored Programs and Research Development.

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Hill, E.M. Audiogram of the mallard duck (Anas platyrhynchos) from 16 Hz to 9 kHz. J Comp Physiol A 203, 929–934 (2017). https://doi.org/10.1007/s00359-017-1204-6

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  • DOI: https://doi.org/10.1007/s00359-017-1204-6

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