Howler Monkeys

Named for their throaty howls that can be heard for up to three miles, howler monkeys are the loudest of all New World monkeys. There are nine species of howler monkey, and Costa Rica is home to the common mantled howler, which inhabit parts of southern Mexico, Central and South America. Howler monkeys usually vocalize at dawn and dusk by passing air through a specially-adapted hyoid bone in their large throats. The result is a deep, grunt-like call that resonates for miles. These vocalizations are used to mark territory and communicate with others within the troop.

Last updated: Nov 1, 2023