Atlantic titi the general area. Additionally, all titi monkeys have "Dawn Calls" in the mornings in which the male and female usually duet the same song. Atlantic titi The Atlantic titi or masked titi ("Callicebus personatus") is a species of titi, a type of New World monkey, endemic to Brazil. The Atlantic titi is part of the genus "Callicebus" which is composed of thirteen species and sixteen subspecies. More specifically, they belong to the group "Callicebus moloch" which is composed of eight species and eight subspecies. Three subspecies of "Callicebus personatus" have been described in scientific literature: "C.p. melanochir", "C.p. nigrifrons", and
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.