Assessing vocal performance in complex birdsong: a novel approach
Abstract Background Vocal performance refers to the ability to produce vocal signals close to physical limits. Such motor skills can be used by conspecifics to assess a signaler’s competitive potential. For example it is difficult for birds to produce repeated syllables both rapidly and with a broad...
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ftbiomed:oai:biomedcentral.com:s12915-014-0058-4 2023-05-15T13:10:01+02:00 Assessing vocal performance in complex birdsong: a novel approach Geberzahn, Nicole Aubin, Thierry 2014-08-06 http://www.biomedcentral.com/1741-7007/12/58 en eng BioMed Central Ltd. http://www.biomedcentral.com/1741-7007/12/58 Copyright 2014 Geberzahn and Aubin; licensee BioMed Central Aggressive signaling Alauda arvensis Birdsong Complex song Contextual variation Production limits Research article 2014 ftbiomed 2014-08-17T00:37:35Z Abstract Background Vocal performance refers to the ability to produce vocal signals close to physical limits. Such motor skills can be used by conspecifics to assess a signaler’s competitive potential. For example it is difficult for birds to produce repeated syllables both rapidly and with a broad frequency bandwidth. Deviation from an upper-bound regression of frequency bandwidth on trill rate has been widely used to assess vocal performance. This approach is, however, only applicable to simple trilled songs, and even then may be affected by differences in syllable complexity. Results Using skylarks ( Alauda arvensis ) as a birdsong model with a very complex song structure, we detected another performance trade-off: minimum gap duration between syllables was longer when the frequency ratio between the end of one syllable and the start of the next syllable (inter-syllable frequency shift) was large. This allowed us to apply a novel measure of vocal performance - vocal gap deviation: the deviation from a lower-bound regression of gap duration on inter-syllable frequency shift. We show that skylarks increase vocal performance in an aggressive context suggesting that this trait might serve as a signal for competitive potential. Conclusions We suggest using vocal gap deviation in future studies to assess vocal performance in songbird species with complex structure. Article in Journal/Newspaper Alauda arvensis BioMed Central |
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Open Polar |
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BioMed Central |
op_collection_id |
ftbiomed |
language |
English |
topic |
Aggressive signaling Alauda arvensis Birdsong Complex song Contextual variation Production limits |
spellingShingle |
Aggressive signaling Alauda arvensis Birdsong Complex song Contextual variation Production limits Geberzahn, Nicole Aubin, Thierry Assessing vocal performance in complex birdsong: a novel approach |
topic_facet |
Aggressive signaling Alauda arvensis Birdsong Complex song Contextual variation Production limits |
description |
Abstract Background Vocal performance refers to the ability to produce vocal signals close to physical limits. Such motor skills can be used by conspecifics to assess a signaler’s competitive potential. For example it is difficult for birds to produce repeated syllables both rapidly and with a broad frequency bandwidth. Deviation from an upper-bound regression of frequency bandwidth on trill rate has been widely used to assess vocal performance. This approach is, however, only applicable to simple trilled songs, and even then may be affected by differences in syllable complexity. Results Using skylarks ( Alauda arvensis ) as a birdsong model with a very complex song structure, we detected another performance trade-off: minimum gap duration between syllables was longer when the frequency ratio between the end of one syllable and the start of the next syllable (inter-syllable frequency shift) was large. This allowed us to apply a novel measure of vocal performance - vocal gap deviation: the deviation from a lower-bound regression of gap duration on inter-syllable frequency shift. We show that skylarks increase vocal performance in an aggressive context suggesting that this trait might serve as a signal for competitive potential. Conclusions We suggest using vocal gap deviation in future studies to assess vocal performance in songbird species with complex structure. |
format |
Article in Journal/Newspaper |
author |
Geberzahn, Nicole Aubin, Thierry |
author_facet |
Geberzahn, Nicole Aubin, Thierry |
author_sort |
Geberzahn, Nicole |
title |
Assessing vocal performance in complex birdsong: a novel approach |
title_short |
Assessing vocal performance in complex birdsong: a novel approach |
title_full |
Assessing vocal performance in complex birdsong: a novel approach |
title_fullStr |
Assessing vocal performance in complex birdsong: a novel approach |
title_full_unstemmed |
Assessing vocal performance in complex birdsong: a novel approach |
title_sort |
assessing vocal performance in complex birdsong: a novel approach |
publisher |
BioMed Central Ltd. |
publishDate |
2014 |
url |
http://www.biomedcentral.com/1741-7007/12/58 |
genre |
Alauda arvensis |
genre_facet |
Alauda arvensis |
op_relation |
http://www.biomedcentral.com/1741-7007/12/58 |
op_rights |
Copyright 2014 Geberzahn and Aubin; licensee BioMed Central |
_version_ |
1766210669199228928 |