I have 2 flocks, one is a mix of OEGB and the other is pure OEGB BBR, they are beautiful birds, they free range, i love their personalities, watching them fly, i think they have very wild instincts, they are very inteligent, smart little birds. Some months ago i had this episode, I had a hawk attacking my flock for nearly a month, the hens had chicks, before i knew he killed 5 chicks of different mothers, then i started to watch them to protect them and i was amazed! They learned to escape the hawk, i saw several times the hawk trying to catch the chicks, but they managed to get away,they became very alert to all moviments in the sky, and would run or fly for cover in bushes very fast, the younger chicks would use sometimes camuflage laying still below the grass, and if the hawk got near the chicks the hen would attack him, then all that noise will attract the roosters attention and they would chase the hawk away, the hawk finely got bored and never returned again.