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Bullen RD and McKenzie NL, 2002. Differentiating Western Australian Nyctophilus (Chiroptera: Vespertilionidae) echolocation calls. Australian Mammalogy 23: 89-93. The ultrasound calls of the six species of Nyctophilus bat in Western Australia can be differentiated using power spectral analysis. Their search-mode call sequences show distinctive trends of variation in peak-frequency (F peak ) values call-to-call. These differences are too subtle to be separated in amplitude-time domain with thedoi:10.1071/am01089 fatcat:jggo3bzknbam5pyj3zqzf2tmla