We have a family of hawks that moved into my neighborhood a couple of years ago. It's not often we get raptors in crowded Los Angeles suburbs, so I've been delighted to see them. I was NOT so delighted to see not one, but TWO of them in the trees above my yard, keenly eyeing my free-ranging chickens. I have no idea if a Coopers Hawk is big enough to carry off a full-grown chicken, but I'm certainly not taking any chances with my 6-week old pullets! Does anyone know how much of a threat they are? This sucks. I wanted to be able to let them have free access to my yard..but I don't even know if my presence there would be a deterrant.