Ok so I have 35 birds in a huge fenced in pasture. We have about 5 brown leghorns that WILL NOT stay in the pasture they fly or climb the fence (their wings are clipped). It's only the leghorns the amerauncanas and rhode islands stay in just fine. It is 5' fencing. They keep getting into my garden and they are about to become dinner if they don't stay in. Anyone have any advice on how to keep them in?