We live just off West End Ave/ 440 and have had quite a bit of trouble with hawks. I left our babies out for about a minute and a half in the fall to fill up their water. Came out to find them huddled in the corner of the pen squawking. I counted and was missing one. About 5 minutes later saw a hawk circling. Figure that must have been it. The pen is narrow and our power line runs right over it, but it must not have deterred the hawk like I thought it would. So, I bought bird netting to cover it. He would swoop and get a good look, but move on. Then a few weeks later, he dove and got stuck in the netting. Quite a sight to see!! Hawks are huge close up. He got himself out...luckily, I didn't want to help him!! A few weeks later the chickens were out in the back yard with me, a neighbor, her 2 kids and my 4 running around in my itty bitty back yard crossed with low tree limbs and phone lines. That hawk swooped down not 5 feet from me. I screamed and clapped my hands so hard they hurt for days! He took off mid swoop. All winter he would sit in our tree overlooking the coop and pen. My hubs finally popped him with a BB gun. Not sure if that is illegal or not, but he has yet to come back, sit and drool over the chickens. They now "safely" range out in the front yard and take cover under the bushes if he glides by. I am still not 100% sure the hawk won't try to pick one up, but the ladies seem smarter and maybe they are too big. They are all full size chickens. Sorry for the long post, but just didn't want any city farmers thinking hawks are not a problem in a congested populated area. We have frequent coyote, possum, fox, and raccoon sightings as well.