I have 5 nearly hens in an enclosed coop. I let them out for an hour or so every evening while I am out watching them in the yard. Yesterday they had wandered probably 20 feet from me on the yard near the wood line and all of a sudden I heard squawking and looked up just in time to see a somewhat large hawk (2-3 foot wing span?) like bird swoop up and away. The chickens were all safely in the woods under a small bush freaked out of their little brains but entirely fine. I climbed under the bush and counted and checked them all out and they were fine. After grabbing a handful of treats I eventually coaxed them across the yard and back into the coop (half way across the yard they all ran as fast as they could to the safety of their coop, it was pretty funny to watch) The one that was the presumed target ran directly from the woods to the coop once most of the birds were half way across the yard. My yard is pretty small.

It extends about 10 more feet and then wraps around the garage. I generally sit in that shady area.
My questions are:
Why didn't the hawk try to eat them?
Will the hawk try to get them again? (I had never seen a hawk here before, but we have lots of bunnies in the neighborhood so there certainly is food for them)
What can I do to protect them while I sit outside with them?
It extends about 10 more feet and then wraps around the garage. I generally sit in that shady area.
My questions are:
Why didn't the hawk try to eat them?
Will the hawk try to get them again? (I had never seen a hawk here before, but we have lots of bunnies in the neighborhood so there certainly is food for them)
What can I do to protect them while I sit outside with them?