Biology, learning, and evolution of vocality: Biosemiotics of birdsong

Abstract

AbstractBirdsongs are acoustic signs that evince parallels to the symbols of verbal language. Learning is the semiotic feature that makes a birdsong more similar to typical symbolic signs than a birdcall. In contrast to calls, most birdsongs have to be learned. The aim of this paper is to emphasize that the similarities between birdsong and verbal language can be addressed by following a biological standpoint, given the shared mechanisms underlying vocal learning in birds and humans, to take a comparative perspective on the biology and evolution of these species. The reason for language’s appearance in the evolutionary scene could be explained as the chance to remain grounded in communication skills that existed in other animals. Even if the referential power of animal vocalizations is far from that of our words, both objectively and mentally, the comparative data mentioned here allows us to support the idea that the vocal production of some bird species and others animals can be considered a natural precursor of language.