Anyone have a good and cheep way keeping their chickens from sitting on the fence. My run has a 4' fence that contains the flock and for some reason they like to sit there. From time to time a couple jump out and the only way I have getting them in is throwing scratch in the run then hold open the gate for them to walk back in. I tried a wire along the top a few inches above the fence and they manage to miss that when they land. Clipping the wing hasn't helped either. I am lost and out of ideas. Please help. John