Spontaneity and diversity of movement to music are not uniquely human.
Level 5 - mechanism / opinion, no new human data
Animal research / single animal case study
PubMed 31287976 · doi:10.1016/j.cub.2019.05.035
What was done
Researchers observed and recorded the movement responses of a single sulphur-crested cockatoo (*Cacatua galerita eleonora*) exposed to musical stimuli to assess whether parrot responses to music include diverse spontaneous body movements beyond stereotyped head-bobbing and foot-lifting.
What was found
The abstract reports no numerical data. It qualitatively reports that the cockatoo spontaneously performed a diverse repertoire of movements using multiple body parts in response to music.
Why it matters
The findings show that spontaneous, diverse movement to music is shared with at least one non-human vocal learner, suggesting such behavior may involve forebrain motor planning networks rather than simple auditory entrainment of innate central pattern generators.
Limits
The study is an observational report of a single animal (n = 1), preventing broader population generalizations. The abstract provides no quantitative movement counts, kinematic metrics, or direct neural recordings to verify the hypothesized forebrain mechanisms.
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