Had a chicken hawk land on corner post of pen few days ago. Wife saw him and ran out shooing him away. Chooks were in corner in a huddle looking at him. My pen is open to sky due to being so large, 185 ft around, 2,000 sq ft. May criss-cross it with orange polypropylene twine like they sell at local Tractor Supply. That and sluminum pie tins, CD;s etc hanging will often keep preds out. I have a large permanent colony of crows here and they usually keep preds out with lots of support and noise, but that day they were not to be found nearby. Shows that it can happen. 12 gauge is now loaded and by back door in garage for next visit.
Here, hawkie hawkie hawkie !
Here, hawkie hawkie hawkie !