Why Do Siamangs Vocalize?

Siamangs are notable for having more coordination and contact during daily activities. The family usually forages for food as a unit. Siamangs are fiercely territorial and defend their territory with daily singing rituals.

Why do siamangs make noise?

Siamangs can sing with their mouth open or closed—when their mouth is closed, the air goes into the throat sac making a deep booming sound. If the siamangs have their mouth open and sing into the throat sac, it creates a loud “wow” sound.

Why do siamangs have throat sacs?

Siamangs are arboreal inhabitants of the Malay Peninsula and Sumatran rain and monsoon forests. Their distinguishing feature is a large throat sac that they use to make socially important vocalizations. These primates are endangered due to illegal pet trade and habitat loss.