Since I covered my pens with netting, put electric wire around the coops and pens and concrete under the gates, I have had two breaches. One was a Red Tail hawk and the other was a Great Horned Owl, aerial predators. I didn't quite have enough netting to completely cover my pens so I bought some online but it wasn't what I thought it was but put it up anyway thinking it would probably deter any aerial predators. I have since replaced the crappy netting with some good netting and the Owl went for another try and got caught in the new netting. We got it into a cage and some wildlife people came and got it. As far as ground predators, they respect the electric wire.
These are pullets that were killed by the hawk about ready to start laying.
The Owl going through the crappy netting.
These are pullets that were killed by the hawk about ready to start laying.
The Owl going through the crappy netting.