AllenK RGV
Chicken Addict
Does OP not have at the least a securely fenced yard? To rule out the 4 legged?I did not state obvious. You are jumping gun wasting the time of many by not providing key details about circumstances around loss of chickens.
Specifically, you did not answer my question. Unless you actually saw hawk pack off birds lost, it is not a hawk. An adult standard sized hen of breeds you lost can not be packed off by any raptors short of an eagle. That would mean you are barking up wrong tree with respect to what predator species is involved. I am betting your predator barks or at least yips.