You’re not. We’ve had chickens for almost 3 years and have lost a couple to hawks here And there unfortunately. We thought our coop and run were like Fort Knox until early this Morning when i got a text from my daughter (Waiting for the bus at 6:50am) that the chickens were freaking out. It wasn’t quite light out. I ran outside and they were all terrified and one of my original girls, an Easter egger was dead, half eaten and pulled partially through the fence. She was our biggest chicken and best layer. Prints in the Snow appear to be raccoon prints and I’m now on guard for sure. I always look to the skies but now enemies are everywhere. We are too close to other houses to shoot, but am getting trail cams tomorrow and if I see anything, hubby will get his .22 out regardless. We have a Great Dane and a Saint Bernard who share the same hard so I really thought their smell would deter any predators
It is so discouraging when we think we've done all we can to protect our pet chickens and then some clever predator finds it's way in. Raccoons are notorious for getting their hands through fences and grabbing whatever they can on a chicken and pulling it off. Usually that's the head. You can avoid this in the future by fortifying your run with 1/4 or 1/2 inch hardware cloth. Electric fencing is another way, but not as fool proof as the hardware cloth. 
