Similar to humans, non-human primates combine gestures, facial expressions, and vocalizations in various ways to communicate effectively. Researchers of the Max Planck Institute for Evolutionary Anthropology investigated one such signal, the ‘leaf clip’ gesture, which re-emerged in a wild chimpanzee group during an alpha takeover. Importantly, the gesture was produced only by adult male chimpanzees, immediately preceded their pant hoot vocalizations and was associated with acoustic changes in those calls.