I second the rooster vote. I have 5 adult roos to protect my flock. I always try to keep two out with the free rangers..and they have done excellent at alerting for hawks. One of my breeding pairs, were hawk attacked 2 years ago on Thanksgiving. I thought i had lost them both. They both had injuries, but survived and are doing fine. They don't like free ranging alone anymore. They will voluntarily go into their chicken tractor if that roo or one of the other roos sounds an alert.
Oh, and this one roo did fight off the hawk. I found him hiding way up in the rafters of his chicken tractor.
Oh, and this one roo did fight off the hawk. I found him hiding way up in the rafters of his chicken tractor.