Estimated Wild Population
Adult Francois' langurs have black fur with a white stripe stretching from ear to ear acros their jawline, as well as a black crest atop their head. Young langurs are orange at birth, which may encourage adult females to care for and keep track of them. These primates, which feed primarily on leaves, have a multi-chambered stomach that helps them get the most out of their low-nutrient diet. Special bacteria lining their stomach also aid the process.
Interesting Fact 1
Francois' langurs are threatened by logging, agriculture, hunting, and the illegal pet trade.
Interesting Fact 2
Females assist in caring for other langurs’ offspring, a behavior called alloparenting or "aunting."
Interesting Fact 3
Males define and defend their territory with hoarse vocalizations.
Commitment to Care
Lincoln Park Zoo prioritizes individual well-being over everything else. Guided by scientific research, staff and volunteers work to provide the best welfare outcomes for each individual in the zoo’s care.
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Animals Depend On People Too
When you ADOPT an animal, you support world-class animal care by helping to provide specially formulated diets, new habitat elements, and regular veterinary checkups.
The Wish List is full of one-of-a-kind items for the zoo’s animals, including nutritious snacks and enrichment items to keep them active and healthy.
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Wildlife face many daunting challenges—some global, like planet-wide climate change, and some that affect individuals, like an animal ingesting plastic—but now is not the time to despair. None of these problems are too big for us to come together and solve.