
Restoring the Smooth Green Snake

Conservation in the Zoo’s Backyard
Smooth green snakes are native to northern Illinois, but their numbers have declined in the region—and throughout their range—due to habitat loss. The Lake County Forest Preserve District has restored habitat in recent years in the hope the vibrant species would reestablish itself. But the snakes failed to return on their own, and so the forest preserve district began a conservation partnership with Lincoln Park Zoo.
Zoo scientists and forest preserve biologists are working together to restore the smooth green snake to Lake County. The first step is a zoo-based breeding program, designed to build numbers and manage snakes recovered from the wild for eventual release.
Juvenile snakes are currently being raised both at the zoo and in outdoor shelters in the forest preserve. By comparing growth and survival rates between the two settings, scientists will determine the best “head start” conditions for a successful release—an important step in the smooth green snake’s recovery.
Staff and Collaborators
Lincoln Park Zoo
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Seth Magle, Ph. D. |
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Joanne Earnhardt, Ph. D. |
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Allison Sacerdote, Ph. D. |
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Diane Mulkerin |
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Dan Boehm Zoological Manager, Regenstein Small Mammal-Reptile House and Pritzker Family Children’s Zoo |
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Michael Brown-Palsgrove |
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Erin Hennessy Assistant Lead Keeper, Pritzker Family Children’s Zoo |
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Lake County Forest Preserve District
Gary Glowacki, Wildlife Biologist
Tim Preuss, Wildlife Biologist
Jim Anderson, Natural Resource Manager
About the Smooth Green Snake

Smooth green snakes are found through much of the United States and Canada, including the Chicago area. Named for their vibrant coloration, they feed on insects and spiders and pose no threat to people.
Learn more with the zoo's smooth green snake fact sheet.
Multimedia
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Headstarting Smooth Green Snakes in Lake County Reintroduction biologist Allison Sacerdote offers an inside look at a “soft release” of smooth green snakes. Lincoln Park Zoo is partnering with the Lake County Forest Preserve District to restore the insect-eating snakes to northern Illinois.
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Releasing the Last Batch of Smooth Green Snakes In a Conservation Field Diary, Reintroduction Biologist Allison Sacerdote shares the August 2011 reintroduction of smooth green snakes into a Lake County Forest Preserve.
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Snake Signals Six more smooth green snakes return to the wild! By equipping the reptiles with tiny transmitters, scientists will track them as they establish homes in the Lake County Forest Preserve District. |
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Snake Signals Slideshow Follow along as scientists reintroduce smooth green snakes to northern Illinois. |
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Road to Recovery In June 2011, Lincoln Park Zoo and the Lake County Forest Preserve District reintroduce the first smooth green snakes to the local ecosystem. |
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Restoring the Smooth Green Snake Lincoln Park Zoo scientists are working with the Lake County Forest Preserve District to restore wild populations of the smooth green snake. Follow researchers into the field in August 2010 as they introduce new hatchlings to safe housing. |
Conservation & Science
- Focuses
- Projects
- Gombe Field Research
- Serengeti Health Initiative
- Goualougo Triangle Ape Project
- Chimpanzee SSP
- Surveying Lincoln Park's Bird Species
- Eastern Massasauga Rattlesnake Recovery Efforts
- Black Rhinoceros Conservation in Addo Elephant National Park
- Restoring the Smooth Green Snake
- Lincoln Park Zoo's Project ChimpCARE
- Chimps Should Be Chimps
- ChimpDATA
- Protecting the Puerto Rican Parrot
- The Mind of the Chimpanzee
- Urban Wildlife Biodiversity Monitoring
- Rabbit Management Study at Lincoln Park Zoo
- Urban Black-tailed Prairie Dog Ecology
- ZooRisk
- Avian Reintroduction and Translocation Database
- Conserving the Black-Footed Ferret
- PMCTrack
- Predicting Capacity for African Ape Sanctuaries
- PopLink
- Ape Tool-Use Studies
- Ape Touch-Screen Studies
- Data Standards for Animal Records Databases
- Ethically Managing Free-Roaming Cat Populations
- Great Ape Blood Typing
- Modeling the Future of Zoo and Aquarium Populations
- Monitoring Ape Behavior
- Monitoring Bat Diversity in and Around Chicago
- Ornate Box Turtle Population Recovery in Illinois
- Tarangire Elephant Modeling
- The Outcomes of Wildlife Relocation
- Token-Exchange Studies
- Science Centers
- Resources













