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 The ornate titi is monogamous, and their upbringing is entirely paternal, only ever being passed to the mother to be fed. with the birth season being from December to March, with the smallest infants being born in December to January. The average gestation period for an ornate titi is 128 days (4.2) months, and there have been observations that, during lactation, female titis tend to increase the amount of protein in their diet (Primarily by eating more insects). Some conservation efforts within Colombia have been made, since the species occurs in La Macarena National Park and Tinigua National Park, and