THIS ABSOLUTELY WORKS FOR HAWKS!! I mistakenly found this out. I wanted to let my chickens out but keep them from wandering off. We had a roll of that orange construction plastic fencing and put it up. I think we live in hawk heaven here in S. Louisiana and we watch them all the time swoop down and grab doves, red and blue birds. They wont come near my chickens because of the orange fencing!!!! I have watched two hawks in trees near my chickens and they would not come down to my chickens. Our neighbors cant keep chickens because the hawks are so bad here and yet we are going on a year and no problems. There is nothing over the top, just a 4' orange construction fence - thats it. (of coarse, we have a fenced yard and coop for the chickens at night. We just let them out in the orange area during the day) Also, I do have an old trampoline in the yard in case they need to run for cover, but I have never seen them need it. The color or design of the orange fencing must really confuse the hawks. I hope word gets out about this because its an amazing discovery.