Elk use several different vocalizations during the rut. Some are made only by a certain sex or age class, and each is used for a different reason. The first of which being the cohesion call which is made by both sexes of elk, and is used to locate one another. An alarm squeal is made by both sexes of elk when they are on alert, during the rut these are used frequently by young bulls (male elks) being run off by the herd bull. Satellite bulls frequently spar with one another during the rut, and in turn make sparring squeaks.