Coimbra Filho's titi Coimbra Filho's titi Coimbra Filho's titi ("Callicebus coimbrai") or just Coimbra's titi is a species of titi, a type of New World monkey, endemic to forests in the Brazilian states of Bahia and Sergipe. It was first discovered by Shuji Kobayashi. It is considered one of the most endangered of all Neotropical primates. It is named after Adelmar F. Coimbra-Filho, founder and Former Director of the Rio de Janeiro Primate Centre, in honor of his work in the field of Brazilian primatology and biology. The most distinct of Coimbra Filho's titi's features, from other members of the "personatus" group, include
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.