Here in Massachusetts, I live by 800 acers of wildlife management area... We have many hawk nests in that area. When I 1st started my feather farm, a hawk arrived, nailed two of my chickens, and left them to die... Hawk left no marks or bloody messes... Just a few scattered feathers and my poor chickens hiding til death, under a boat and my deck...
Now my girls are in more secure tree and roof covered areas. Hasn't happened again, but I do see the hawks lurking up above.
Add I added a rooster, he is a great hurdler and notifier