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Songbird tap dancing produces non-vocal sounds

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Title: Songbird tap dancing produces non-vocal sounds
Authors: Ota, Nao Browse this author
Gahr, Manfred Browse this author
Soma, Masayo Browse this author →KAKEN DB
Keywords: Multimodal communication
mutual courtship display
socially monogamous songbird
Estrildid finch
sound amplitude
Issue Date: 4-May-2017
Publisher: Taylor & Francis
Journal Title: Bioacoustics : the international journal of animal sound and its recording
Volume: 26
Issue: 2
Start Page: 161
End Page: 168
Publisher DOI: 10.1080/09524622.2016.1231080
Abstract: Vocalizations have been elucidated in previous songbird studies, whereas less attention has been paid to non-vocal sounds.In the bluecapped cordon-bleu (Uraeginthus cyanocephalus), both sexes perform courtship displays that are accompanied by singing and distinct body movements ( previous study revealed that their courtship bobbing includes multiple rapid steps.This behaviour is quite similar to human tap dancing, because it can function as both visual and acoustic signals.To examine the acoustic signal value of such steps, we tested if their high-speed step movements produce non-vocal sounds that have amplitudes similar to vocal sounds. We found that step behaviour affected step sound amplitude. Additionally, the dancing step sounds were substantially louder than feet movement sounds in a non-courtship context, and the amplitude range overlapped with that of song notes.These results support the idea that in addition to song cordon-bleus produce acoustic signals with their feet.
Rights: This is an Accepted Manuscript of an article published by Taylor & Francis in Bioacoustics on May 2017, available online:
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 相馬 雅代

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