For many in Illinois, this is not a mystery, but it has become a topic again. When you see a big ball of leaves in your tree this time of year, it's not birds making nests. It's another critter entirely.
I drive up and down Highway 61 in Missouri nearly every single day of my life. I recently saw a large nest near LaGrange and looked at my wife who saw it, too. It wasn't squirrels up in that tree either.
As I was walking through our Missouri neighborhood the other day enjoying the mild weather, I noticed several things about the trees. Number one is many are already budding. Number two is there are big balls of leaves everywhere. In case you didn't know, those aren't for birds.