Gibbon Press Materials

It's a Boy! Baby Gibbon Confirmed Male, Given Name
Chicago (Apr 12, 2011) – Lincoln Park Zoo has confirmed their newest swinging sensation, a baby white-cheeked gibbon, is a boy – and boy is he cute! The 3-month-old critically endangered ape has also been given a name. 

“The baby has been named Sai, (pronounced ‘sigh’), which means ‘son’ in Taiwanese,” said Lincoln Park Zoo Curator of Primates Maureen Leahy. “He is the third offspring – all sons – for the mother Burma and father Caruso.”

White-cheeked gibbons are native to parts of southeastern Asia. They are unique in that the males are black with white fur on their cheeks, and the females are tan colored. Gibbon infants are born the same golden tan color as their mothers, but by age two will turn black. The males will remain black while the females will turn back to golden tan once they reach sexual maturity.

“Sai has been transforming right before my eyes over the last 3 months,” said Leahy. “His hair is beginning to darken in color, his baby teeth have grown in – he’s got an impressive set of choppers – and he’s already starting to venture an arm’s length away from his mother, reaching out to test his long arms on hanging vines,” said Leahy.  

The gibbon trio can be seen daily at the Helen Brach Primate House. Lincoln Park Zoo is significantly involved in ape conservation efforts in the wild to help secure a long term future for endangered apes.

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Lincoln Park Zoo’s Newest Swinging Sensation: a Gibbon Baby!

Chicago(January 7, 2011) – There is a lot of oohing and aahing at Lincoln Park Zoo’s primate house. A critically endangered white-cheeked gibbon gave birth to a healthy infant on Jan 6. Curator of Primates Maureen Leahy reported, “The parents are doing great and the infant is a good size with a tight grip and has been seen nursing.” The infant has yet to be sexed or named.

This is the third offspring for mother Burma and father Caruso. White-cheeked gibbons are believed to pair bond for life, and can have offspring every 2-3 years after a 7-8-month gestation period.

This rare ape is native to parts of southeastern Asia. They have extremely long arms and legs perfect for hanging and swinging throughout the forest. At birth the infants are strong enough to cling tightly to their mother’s belly while she swings from branch to branch. Gibbons are unique in that infants are born with tan colored fur like their mother, but by age two their color turns to black. When they reach adulthood, males remain black and females will have changed back to golden tan. 

Lincoln Park Zoo participates in the Gibbon Species Survival Plan, a shared conservation effort by zoos throughout the Association of Zoos and Aquariums. The zoo also financially contributes to gibbon field conservation efforts to continue the longevity of the species.

The infant can be seen daily at Lincoln Park Zoo’s Helen Brach Primate House. The infant will be tucked into the mother’s arms and clinging to her for comfort and safety.



Chicago’s Lincoln Park Zoo, a historic landmark founded in 1868, is dedicated to connecting people with nature by providing a free, family-oriented wildlife experience. A leader in conservation science both globally and locally, the zoo exemplifies the highest quality animal care and educational outreach. The not-for-profit zoo, managed by The Lincoln Park Zoological Society, is a member-supported organization and one of the nation’s only free, privately managed zoos. For more information, call 312 -742-2000 or visit

Gibbon Newborn Raw Footage, Quicktime .MOV, 72,191KB

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