This place is a zoo

Southern flying squirrel
Glaucomys volans
Description Gray with a white tummy; resembles a typical squirrel except for its patagium—a flap of skin running from wrist to ankle that allows it to glide like a soft, furry Frisbee.
Habitat Any area forest preserve—the best place in Cook County is probably Thatcher Woods, just west of the city in River Forest. Also, Morton Arboretum in Lisle. Scope for these critters at night.
Notes Chicago is home to a lot of freakin’ squirrels—eight varieties, to be exact—including the ubiquitous gray and fox squirrels, the beloved chipmunk and that media whore the groundhog. And while Brown says appearances by these real-life Rockys (as in the Rocky and Bullwinkle cartoons) tend to be freakish and random, “some people see them return to their birdfeeders and get an almost nightly show.”

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