A shortened form of a Trumpet may be heard during Social Play and is known as a Trump.

References: Berg 1983. (Full reference list)

This behavior occurs in the following context(s): Social Play


Context: Social Play (1)

Two boys at play. They seem to suddenly find our car a bit close and one Stands-Tall looking at us. He does a kind of a Head-Dip and then gives a short sharp Trump. (Amboseli, Kenya)