White-eared titi the males. There is a strong bond between the adult mating pair, they stay close and carry out activities together. Either member of the pair may follow the other and leadership changes through the day. Evidence of the strength of the pair bond is shown by grooming, huddling together with their tails twined, nuzzling, and gentle grasping. Titi monkeys are highly territorial and when confronted with another family group, both will respond with threatening behaviour, males showing increased agitation towards intruding males. When not close together, the pair show a significant amount of distress and agitation. Titi monkeys are well
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