Budgerigars (Melopsittacus undulatus) do not hear infrasound: the audiogram from 8 Hz to 10 kHz

Henry E Heffner1, Gimseong Koay2, Rickye S Heffner2

  • 1Department of Psychology, University of Toledo, Toledo, OH, 43606, USA. Henry.Heffner@utoledo.edu.

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