An elephant bouncing the distal and outer portion of a curled trunk on the ground. The Trunk-Bounce seen in Asian elephants is a common display which produces a clearly audible thumping or popping sound. When aroused or threatened Asian elephants may repeatedly pop or bounce their trunks on the ground. In African elephants musth males and Charging females may bounce their trunks on the ground as a threat at very close range.
Viajante is acting as if he is in musth. He walks away from a mud wallow Trunk-Dragging and looks to be Tracking. He makes a little Ear-Wave type movement. Then he stops to Listen and J-Sniff. As this clip begins he continues and Rubs on tree and while doing so he does a series of Trunk-Bounce-like movements. We have never seen this particular way of doing it as far as we can remember. (Gorongosa, Mozambique)