Our fence in our run is around 5 foot 3 or 4. Over a year ago we cut our Rhode island reds feathers because they were escaping, and so far they haven't grown back or gotten over the fence. Our buff orpingstons have never gotten over the fence either and we never cut their feathers. We do have a buff silkie rooster, and it seems he can jump really high. We have had him for 10 months now, and he hasn't escaped. I have seen him eye this piece of plywood that hangs down a bit, and I wonder if he ever would try to escape. We have string up, but i think he could get around it. Should I remove the plywood? Its sagging since it's been up for a year, and I'm also worried it could break apart.