Vocal production learning in mammals revisited

Vincent M. Janik*, Mirjam Knörnschild

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

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Abstract

Vocal production learning, the ability to modify the structure of vocalizations as a result of hearing those of others, has been studied extensively in birds but less attention has been given to its occurrence in mammals. We summarize the available evidence for vocal learning in mammals from the last 25 years, updating earlier reviews on the subject. The clearest evidence comes from cetaceans, pinnipeds, elephants and bats where species have been found to copy artificial or human language sounds, or match acoustic models of different sound types. Vocal convergence, in which parameter adjustments within one sound type result in similarities between individuals, occurs in a wider range of mammalian orders with additional evidence from primates, mole-rats, goats and mice. Currently, the underlying mechanisms for convergence are unclear with vocal production learning but also usage learning or matching physiological states being possible explanations. For experimental studies, we highlight the importance of quantitative comparisons of seemingly learned sounds with vocal repertoires before learning started or with species repertoires to confirm novelty. Further studies on the mammalian orders presented here as well as others are needed to explore learning skills and limitations in greater detail.
Original languageEnglish
Article number20200244
Number of pages10
JournalPhilosophical Transactions of the Royal Society. B, Biological Sciences
Volume376
Issue number1836
Early online date6 Sept 2021
DOIs
Publication statusPublished - 25 Dec 2021

Keywords

  • Pinnipedia
  • Chiroptera
  • Primates
  • Elephants
  • Vocal communication
  • Cetacea

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