Mysterious Goo Found on Cars, Driveways in Michigan

I came across this very interesting video that was posted by Fox news the other day.. Residents in a small town in Michigan are wondering what this mysterious goo that is dropping from the sky.. Now some people think it’s just bird crap but “that’s impossible for all of them to poop at once” says one concerned lady.. She has already taken a sample for further testing, now I can’t wait to find out what it is! Now also in the video they talk about the planes sewage system: “It could be leaking from a plane” and then they finish the shot with a video of what appears to look like chemtrails.. So what do you think it is?