van reets from what you have said in your previous posts ( birds sitting on roof tops all day) i dont think you have control over your birds, and they control you. they must think the roof top is there perch, as they spend most of there time on there. YOU nees to gain control and fast, or it will only end up in misery for you and your neighbours .Dont be to nice to them :-/. cut that feed right down, Hunger over comes most things