This afternoon we let the 4 chicks roam the yard again, with me and my son standing right there with them. For a while, I kept watching the sky for any sign of hawk. Feeling all is safe, I began working on the coop (same area) for about 5-10 minutes, when my son yelled "hawk hawk". I jumped and danced and yelled and chased it away. Apparently a hawk had landed on a tree in our yard, watching for a clear sight to the chicks. That was a close call! I'm amazed how brave the hawk was, with both my son and me only a few yards from the chicks. Hmm ... does that mean my chicks can never free-range, even when they're grown up? Will hawk be less a problem when the chickens are fully grown?