I am a newbie and want to prevent this. Were your chickens out of the coop? Was the coop opened by the coon, or a hole dug? Did this happen in the day or night? This info will help me building my coop. I want an open bottom run but if the coons dug under I will take my dad's advice and make it a screened bottom. I am so sorry this happened to you. I have a two year old and four year old and while they need to learn about these kinds of things I'd like to prevent this from happening if I can.