The call of the Howler Monkey is one of the most notable, and eery, sounds of the rainforest. The alpha male makes this call to define the territory of his troop. Sometimes competing troops can be heard calling back and forth to each other. Stereo monkeys. The sound can carry for several miles. Howling recorded on a recent GreenTracks Amazon Riverboat Cruise.
See video HERE
GreenTracks Amazon Cruises