Slapping the ears loudly and sharply against the neck and shoulders. In a Movement Space and Leadership and Avoidance context this gestures is typically made by an older female, often the matriarch, who appears to use it to call attention to her location and (changing) activity or movement. In Aggressive, Coalition Building or Attacking & Mobbing contexts, it is used in association with Ear-Folding as an elephant Advances-Toward its adversary.
Filmed in slo-mo. As the C family begins to move, Nomada, gf0003, picks up the pace. Adult female, gf0004, was still feeding but as Nomada approaches her she begins to walk with a demonstrative Ear-Slap to signal her and their movement. (Gorongosa, Mozambique)