Animal perception and animal vocal communication are important research areas, and statistical machine learning has brought new forms of evidence to bear on them (Elie and Theunissen, 201610. Elie, J. E., and Theunissen, F. E. (2016). “ The vocal repertoire of the domesticated zebra finch: A data-driven approach to decipher the information-bearing acoustic features of communication signals,” Anim. Cogn. 19(2), 285–315. https://doi.org/10.1007/s10071-015-0933-6; Kohlsdorf et al., 201616.