Mind the gap: Neural coding of species identity in birdsong prosody

TLDR

Birds must recognize species‑specific songs and learn them, yet the neural basis of this recognition and learning remains unclear. The study identifies two brain‑cell types involved in song learning, shows that zebra finches raised by Bengalese foster parents adopt foster song morphology but retain innate temporal structure, and demonstrates that dopamine neuron activity generates negative prediction errors during distorted feedback, supporting an innate internal goal for song structure. Citations include Araki et al.

Abstract

Birds of a feather sing together How do birds know that a song that they hear is from a member of their own species, and how do they learn their songs in the first place? Araki et al. identified two types of brain cells involved in how finches learn their songs (see the Perspective by Tchernichovski and Lipkind). When zebra finches were raised by Bengalese finch foster parents, they learned a song whose morphology resembled that of their foster father. However, the temporal structure remained zebra finch–specific, suggesting that it is innate. Gadagkar et al. recorded activity in specific dopamine neurons in singing zebra finches while controlling perceived song quality with distorted auditory feedback. This distorted feedback represented worse performance than predicted and resulted in negative prediction errors. These findings suggest again that finches have an innate internal goal for their learned songs. Science , this issue p. 1282 , p. 1234 ; see also p. 1278