Collared titi National Park and El Tuparro National Park and in the two biological preserves Nukak and Puinawai. Actually a clarification of the taxonomic status of many populations is needed to be able to monitor their conservation state. Collared titi The collared titi (Cheracebus torquatus) is a species or a closely related complex of species of titi, a type of New World monkey, from South America. At the end of the 1980s the genus "Callicebus" was revised from the Hershkovitz concept of three species to thirteen neotropical species, with the collared titi, "Callicebus torquatus", having four subspecies. In 2001 Colin Groves elevated
Ornate titi daily activity lasts for around 11.5 hours, with feeding taking up around 2.7 hours. Their day is typically split into two feeding sessions, one in the morning and one in the evening, with a resting session at around midday. The last few hours of the day are generally spent feeding on leaves. The predominant and most important predators of all titis are raptors. Several species of raptor have been observed attacking a titi, including the Guianan crested eagle ("Morphnus guianensis") and the Ornate hawk-eagle ("Spizaetus ornatus"). Tufted capuchins ("Cebus apella") have also been observed killing and consuming an ornate titi.