The baby, whose gender is not yet known, was born on August 18. And she's part of a rare group- only 50 Bolivian gray titi monkeys are found in zoos nationwide.
"The baby is spending most of its time nestled in the thick fur on mom's back, but we do get a glimpse of its little face peeking up now and then," said Curator of Primates Maureen Leahy through a zoo statement. "Dad and the siblings are playfully curious with the new arrival, and the whole group is responding appropriately to the addition."
The little one is the ninth baby born to mom, Delasol, 21, and dad, Ocala, 15. The baby's siblings are helping to care for the newest addition, and the family is often seen sitting close together, intertwining their tails at the Helen C. Brach Primate House.
The wild Bolivian gray titi monkeys population is declining in its native South America due to habitat loss and illegal pet trade, according to Lincoln Park Zoo. This new baby, the parents and siblings are part of a breeding program to protect the species.