Hawks are my big problem. I live in a suburb of a mid-size southern city, and the measure is before City Council to allow backyard chickens. In other words, I anticipated a successful passage of a pro-chicken ordinance. SO, until that happy day, NOISE is a problem, and brother, do my gals make noise when a hawk swoops into the yard. So far, no casualties; my son or I have been there. Today he beefed up our fishing-wire defense, but I know that a determined and hungry hawk will (HAS!) figured out how to get into the yard. And a noisy flock of even 5 chickens is NOT a good thing with neighbors close by on either side. I have a rather large backyard, wonderfully sufficient for my 5 chooks to free-range all day; but that may not last forever. Better to be safe (and quiet) in their spacious pen, with strictly supervised jaunts, than to get eaten or get reported.