For awhile now, Lon Strickler, at his Phantoms and Monsters, has been investigating the winged creature sightings in the Chicago area. These sightings have been going on for months now. Not long ago, Strickler was on Coast to Coast to share his research. (One post of his to check out: Winged Being Observed on Chicago Suburb House Roof.)
What is going on in Illinois? Who can say, except, obviously, something very mysterious and weird. Reports of large, Mothman like creatures are coming in from all over, but the Chicago area an Illinois seems to be a hot spot right now.
I have no theories on this but I do accept that extremely unusual things are happening, of that there is no doubt. And while I've never visited Chicago, I do know there are a lot of haunted places in the area. Whether or not this has anything to do with the current sightings . . .
The political unrest Chicago has seen lately could be a factor. Or, of course, it could be a bird, something prosaic even though still unusual. Of the latter, I don't think so. Too many reports of weirdness to put it in the "just a bird" category.