I finally checked my camera this weekend after 3 months and this was one of the pics that was on there. I didnt even know that we had flying squirrels in WI. Pretty Cool!
Somebody must have stolen your camera last year Flying Squirrel Caught on Camera | Nuts About Squirrels Nature in a Nutshell: Flying squirrel...in action! New York Trail Cam Photos Why people why?
ACTUALLY... Your squirrel looks "Slightly" different. And I apologize if this is an honest pic, and I'll sit in the corner and eat my crow with my foot in my mouth.
I've seen them up in central WI while hunting. I also work in Northern IL and see them often. I was repairing a streetlight once and when I opened it, one flew out brushing the brim of my hardhat. I damn near soiled myself.