Melatonin affects the temporal pattern of vocal signatures in birds.

@article{Dergnaucourt2012MelatoninAT,
  title={Melatonin affects the temporal pattern of vocal signatures in birds.},
  author={S{\'e}bastien Der{\'e}gnaucourt and Sigal Saar and Manfred Gahr},
  journal={Journal of pineal research},
  year={2012},
  volume={53 3},
  pages={245-58}
}
In humans and other animals, melatonin is involved in the control of circadian biological rhythms. Here, we show that melatonin affects the temporal pattern of behavioral sequences in a noncircadian manner. The zebra finch (Taeniopygia guttata) song and the crow of the Japanese quail (Coturnix japonica) are courtship vocalizations composed of a stereotyped sequence of syllables. The zebra finch song is learned from conspecifics during infancy, whereas the Japanese quail crow develops normally… CONTINUE READING

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