83-13363 - Mantled Howler Monkey (Alouatta palliata), named for its call, eating leaves in tree, Nosara, Guanacaste Province, Costa Rica, Central America
83-13361 - Mantled Howler Monkey (Alouatta palliata), named for its call, eating leaves in tree, Nosara, Guanacaste Province, Costa Rica, Central America
83-12651 - A Mantled Howler Monkey (Alouatta palliata), known for it's call, eating leaves in tree; Nosara, Guanacaste Province, Costa Rica, Central America