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Stepwise acquisition of vocal combinatorial capacity in songbirds and human infants



Human language, as well as birdsong, relies on the ability to arrange vocal elements in new sequences. However, little is known about the ontogenetic origin of this capacity. Here we track the development of vocal combinatorial capacity in three species of vocal learners, combining an experimental approach in zebra finches (Taeniopygia guttata) with an analysis of natural development of vocal transitions in Bengalese finches (Lonchura striata domestica) and pre-lingual human infants. We find a common, stepwise pattern of acquiring vocal transitions across species. In our first study, juvenile zebra finches were trained to perform one song and then the training target was altered, prompting the birds to swap syllable order, or insert a new syllable into a string. All birds solved these permutation tasks in a series of steps, gradually approximating the target sequence by acquiring new pairwise syllable transitions, sometimes too slowly to accomplish the task fully. Similarly, in the more complex songs of Bengalese finches, branching points and bidirectional transitions in song syntax were acquired in a stepwise fashion, starting from a more restrictive set of vocal transitions. The babbling of pre-lingual human infants showed a similar pattern: instead of a single developmental shift from reduplicated to variegated babbling (that is, from repetitive to diverse sequences), we observed multiple shifts, where each new syllable type slowly acquired a diversity of pairwise transitions, asynchronously over development. Collectively, these results point to a common generative process that is conserved across species, suggesting that the long-noted gap between perceptual versus motor combinatorial capabilities in human infants1 may arise partly from the challenges in constructing new pairwise vocal transitions.

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Figure 1: Syllable rearrangement task.
Figure 2: Syllable insertion task.
Figure 3: Combinatorial learning in Bengalese finches.
Figure 4: Incorporation of new syllables into infants’ babbling utterances.


  1. Marcus, G. F., Vijayan, S., Bandi Rao, S. & Vishton, P. M. Rule learning by seven-month-old infants. Science 283, 77–80 (1999)

    CAS  Article  ADS  Google Scholar 

  2. Berwick, R. C., Okanoya, K., Beckers, G. J. L. & Bolhuis, J. J. Songs to syntax: the linguistics of birdsong. Trends Cogn. Sci. 15, 113–121 (2011)

    Article  Google Scholar 

  3. Eales, L. Song learning in zebra finches: some effects of song model availability on what is learnt and when. Anim. Behav. 33, 1293–1300 (1985)

    Article  Google Scholar 

  4. Plamondon, S. L., Rose, G. J. & Goller, F. Roles of syntax information in directing song development in white-crowned sparrows (Zonotrichia leucophrys). J. Comp. Psychol. 124, 117–132 (2010)

    Article  Google Scholar 

  5. Derégnaucourt, S., Mitra, P. P., Fehér, O., Pytte, C. & Tchernichovski, O. How sleep affects the developmental learning of bird song. Nature 433, 710–716 (2005)

    Article  ADS  Google Scholar 

  6. Tchernichovski, O., Nottebohm, F., Ho, C. E., Pesaran, B. & Mitra, P. P. A procedure for an automated measurement of song similarity. Anim. Behav. 59, 1167–1176 (2000)

    CAS  Article  Google Scholar 

  7. Yamashita, Y. et al. Developmental learning of complex syntactical song in the Bengalese finch: a neural network model. Neural Netw. 21, 1224–1231 (2008)

    Article  Google Scholar 

  8. Oller, D. K. in Child Phonology Vol. 1 (eds Yeni-Komshian, G. J., Kavanagh, J. & Ferguson, C. ) 93–112 (Academic, 1980)

    Book  Google Scholar 

  9. Stark, R. in Child Phonology Vol. 1 (eds Yeni-Komshian, G. J., Kavanagh, J. & Ferguson, C. ) 73–92 (Academic, 1980)

    Book  Google Scholar 

  10. Mitchell, P. R. & Kent, R. D. Phonetic variation in multisyllable babbling. J. Child Lang. 17, 247–265 (1990)

    CAS  Article  Google Scholar 

  11. Smith, B. L., Brown-Sweeney, S. & Stoel-Gammon, C. A quantitative analysis of reduplicated and variegated babbling. First Lang. 9, 175–189 (1989)

    CAS  Article  Google Scholar 

  12. MacWhinney, B. The CHILDES project: tools for analyzing talk. Child Lang. Teach. Ther. 8, 217–218 (1992)

    Article  Google Scholar 

  13. Davis, B. L. & MacNeilage, P. F. The articulatory basis of babbling. J. Speech Hear. Res. 38, 1199–1211 (1995)

    CAS  Article  Google Scholar 

  14. Edelman, G. Neural Darwinism. The Theory of Neuronal Group Selection (Basic Books, 1987)

    Google Scholar 

  15. Hanuschkin, A., Diesmann, M. & Morrison, A. A reafferent and feed-forward model of song syntax generation in the Bengalese finch. J. Comput. Neurosci. 31, 509–532 (2011)

    Article  Google Scholar 

  16. Golani, I. A mobility gradient in the organization of vertebrate movement?: the perception of movement through symbolic language. Behav. Brain Sci. 15, 249–308 (1992)

    Article  Google Scholar 

  17. Dominici, N. et al. Locomotor primitives in newborn babies and their development. Science 334, 997–999 (2012)

    Article  ADS  Google Scholar 

  18. Hikosaka, O., Rand, M. K., Miyachi, S. & Miyashita, K. Learning of sequential movements in the monkey: process of learning and retention of memory. J. Neurophysiol. 74, 1652–1661 (1995)

    CAS  Article  Google Scholar 

  19. Rand, M. K. et al. Characteristics of sequential movements during early learning period in monkeys. Exp. Brain Res. 131, 293–304 (2000)

    CAS  Article  Google Scholar 

  20. De Boysson-Bardies, B. & Vihman, M. M. Adaptation to language: evidence from babbling and first words in four languages. Language 67, 297–319 (1991)

    Article  Google Scholar 

  21. Vihman, M. M., Macken, M. A., Miller, R., Simmons, H. & Miller, J. From babbling to speech: a re-assessment of the continuity issue. Language 61, 397–445 (1985)

    Article  Google Scholar 

  22. Jin, D. Z., Ramazanoğlu, F. M. & Seung, H. S. Intrinsic bursting enhances the robustness of a neural network model of sequence generation by avian brain area HVC. J. Comput. Neurosci. 23, 283–299 (2007)

    MathSciNet  Article  Google Scholar 

  23. Amador, A., Perl, Y. S., Mindlin, G. B. & Margoliash, D. Elemental gesture dynamics are encoded by song premotor cortical neurons. Nature 495, 59–64 (2013)

    CAS  Article  ADS  Google Scholar 

  24. Jin, D. Z. Generating variable birdsong syllable sequences with branching chain networks in avian premotor nucleus HVC. Phys. Rev. E 80, 051902 (2009)

    Article  ADS  Google Scholar 

  25. Abe, K. & Watanabe, D. Songbirds possess the spontaneous ability to discriminate syntactic rules. Nature Neurosci. 14, 1067–1074 (2011)

    CAS  Article  Google Scholar 

  26. Beckers, G. J. L., Bolhuis, J. J., Okanoya, K. & Berwick, R. C. Birdsong neurolinguistics: songbird context-free grammars claim is premature. NeuroReport 23, 139–145 (2012)

    Article  Google Scholar 

  27. Gentner, T. Q., Fenn, K. M., Margoliash, D. & Nusbaum, H. C. Recursive syntactic pattern learning by songbirds. Nature 440, 1204–1207 (2006)

    CAS  Article  ADS  Google Scholar 

  28. Katahira, K., Suzuki, K., Okanoya, K. & Okada, M. Complex sequencing rules of birdsong can be explained by simple hidden Markov processes. PLoS ONE 6, e24516 (2011)

    CAS  Article  ADS  Google Scholar 

  29. Van Heijningen, C. A. A., de Visser, J., Zuidema, W. & ten Cate, C. Simple rules can explain discrimination of putative recursive syntactic structures by a songbird species. Proc. Natl Acad. Sci. USA 106, 20538–20543 (2009)

    CAS  Article  ADS  Google Scholar 

  30. Rose, G. J. et al. Species-typical songs in white-crowned sparrows tutored with only phrase pairs. Nature 432, 753–758 (2004)

    CAS  Article  ADS  Google Scholar 

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We thank J. Benichov, J. Hyland Bruno, I. Ljubičić and C. Roeske for help with data analysis. We also thank A. Vouloumanos, M. Hauber, L. Parra and V. Valian for reading the manuscript. The study was supported by a US Public Health Service grant to O.T., by a Grant in Aid from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan to K.O., and by a Grant in Aid for Japan Society for the Promotion of Science Fellows to M.T.

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D.L., O.T., G.F.M., D.K.B., Ka.S. and K.O. designed the research. D.L., O.F. and O.T. performed experiments on zebra finches. D.L., G.F.M., O.F., P.R., N.J. and O.T. analysed data of zebra finches. Ka.S., M.T., Ke.S. and K.O. designed and conducted experiments on Bengalese finches. D.L., Ka.S. and O.T. analysed data of Bengalese finches. D.K.B. analysed infant babbling data, with contributions from G.F.M., O.T. and D.L. D.L., G.F.M., D.K.B., K.O. and O.T. wrote the manuscript.

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Correspondence to Dina Lipkind.

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The authors declare no competing financial interests.

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Lipkind, D., Marcus, G., Bemis, D. et al. Stepwise acquisition of vocal combinatorial capacity in songbirds and human infants. Nature 498, 104–108 (2013).

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