thank you much. Any ideas for prevention of attack?
I agree with Laurel. We built our coops in the back of the lean to on the back of our barn. Our runs are covered in hardware cloth which is buried 12" in the ground so nothing can dig in. They are also covered with hardware cloth so the birds can't get in. I. The spring & summer I leave the coop door open for ventilation 24/7. In 4 years nothing has breached our coops. It was well worth the extra money.
We have 7 pens & are currently building 5 new breeding brooding coops.