Birds on the roof can make a terrible mess, especially if it happens to be a tile roof that a local pigeon flock has taken a liking to. We see roof leaks all the time that are caused by birds making their nests on peoples tile roofs. The pigeons have taken over this roof. They are
http://www.roofdoctor1.com/blog/Birds-On-Your-Roof-Making-A-Mess
