Came home to find something had leaked on the Porsche, wtf?

Looked up and it appeared to come from here
So here's my theory. We have a bad pigeon problem, which I know we need to take care of as soon as it cools off. Looks like some of the pigeon crap blocked up the water flow, water backed under a tile and ran down in the garage through the hole and onto my car. Does this make sense to the brain trust? First time we've had this problem in all the rain this year. Poked all around on the Sheetrock and it's not soft so it seems to have all drained out.
