ArticlePloS one2017
Acoustic correlates of body size and individual identity in banded penguins.
Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Sound Guides Object Size Choices in African Penguins Through Pitch-Size Association.Annals of the New York Academy of Sciences · 2026Article
- Nonlinear vocal phenomena in African penguin begging calls: occurrence, significance and potential applications.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Article
- Vocal tract shape variation contributes to individual vocal identity in African penguins.Proceedings. Biological sciences · 2023Article
- Penguins perceive variations of source- and filter-related vocal parameters of species-specific vocalisations.Animal cognition · 2023Article
- Social calls of the little auk (Royal Society open science · 2023Article
- The vocalization of the red junglefowl is a signal of body size and individual health.Current zoology · 2023Article
- Towards the fully automated monitoring of ecological communities.Ecology letters · 2022Review
- The dear enemy effect drives conspecific aggressiveness in an Azteca-Cecropia system.Scientific reports · 2021Article
- Ultrasonic signals associated with different types of social behavior of mice.Nature neuroscience · 2020Article
- Do penguins' vocal sequences conform to linguistic laws?Biology letters · 2020Article
- Vocal tract anatomy of king penguins: morphological traits of two-voiced sound production.Frontiers in zoology · 2020Article
- Automated bioacoustics: methods in ecology and conservation and their potential for animal welfare monitoring.Journal of the Royal Society, Interface · 2019Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Animal vocalisations play a role in individual recognition and mate choice. In nesting penguins, acoustic variation in vocalisations originates from distinctiveness in the morphology of the vocal apparatus. Using the source-filter theory approach, we investigated vocal individuality cues and correlates of body size and mass in the ecstatic display songs the Humboldt and Magellanic penguins. We demonstrate that both fundamental frequency (f0) and formants (F1-F4) are essential vocal features to discriminate among individuals. However, we show that only duration and f0 are honest indicators of the body size and mass, respectively. We did not find any effect of body dimension on formants, formant dispersion nor estimated vocal tract length of the emitters. Overall, our findings provide the first evidence that the resonant frequencies of the vocal tract do not correlate with body size in penguins. Our results add important information to a growing body of literature on the role of the different vocal parameters in conveying biologically meaningful information in bird vocalisations.
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