Red-backed Squirrel Monkey, Saimiri oerstedii cilrinellus, Mono Titi
Distribution: Manuel Antonio, Costa Rica only.
Status and Habitat: This is the most threatened monkey in all of Central America. It is restricted to secondary growth of humid, Pacific slope forest. This subspecies has a gray face. Populations are protected in Manuel Antonio.
Habits: Large feeding groups of Red-backed Squirrel Monkeys create a flurry and are hard to miss. They forage by investigating every leaf, nook and cranny. Groups are active from shortly before dawn to dusk, with variable rest breaks during the day. They are often accompanied by mixed-species flocks of birds including Double-toothed Kites and Tawny-winged Woodcreepers, which hunt flying insects flushed out by the monkeys (Bronski and Scott, 1998). This species is arboreal, traveling with speed and agility at all levels of slender trees and lianas. Group size is normally 10-35. Females give birth to single young after a 7-month gestation. Births are usually during the wet season.
Calls: This monkey makes a variety of low-intensity calls including twitters, trills and chucks, and occasionally, louder yaps and squeals.