I live on the outskirts of town and have free range chickens. My (6 acre) property is fenced, but the fencing is for goats and my chickens go through to surrounding acreage. Last year, I lost more than a dozen chickens to coyotes..and maybe some dogs. They attacked in the morning when there was light out so I did see the coyotes. I managed to scare them off and hadn't had a problem for several months. However, in the past week I have lost 3 roosters and 1 hen (when happened to by one of my favorites). The attacks have been in the early morning when it's dark so I'm not sure if it really is the coyotes that are back or some other culprit. I have considered electrical fencing, but as I stated before, some of my chickens tend to go outside of my property, so most of the attacks are beyond the fencing (during the day). Anyway, I have purchased some motion sensored lights in hopes that these will scare off the predator(s).. I have also thought about purchasing a motion sensored siren/horn. Just want to know your thoughts on this... Does anyone have any other suggestions?