I have 2 "hawk shelters" and planted several bushes in hopes that they will provide hiding places for my chickens. The bushes are still small but they grow fast, in the meantime I placed the hawk shelters in different places where the area is more opened. So far I only let them free range when I am out with them. Right now the hawk season is over for a while, I have only seen a couple that are nesting in the back field, they fly around but I am always able to scare them away. It is amazing when I read in this post about how quickly they can get to their target even when we are around.