About 2 years ago me and a couple buddies bought 100 chick's and my dog got in the brooder when I wasn't home and got all but a couple and when I put em outside they wouldn't roost in the coop so they eventually disappeared. Last week I got 16 free week old chick's. The first night I ended up working all night and asked the wife to check on em and she didn't latch the door so I only had 6 chickens left. 4 were dead in the coop and 6 were just completely disappeared I figured it was a opossum or coon. I do have every predator known to man in my area so who knows what could have got em. Well I went a whole week with the door properly latched and all 6 made it. I got a smoking good deal on 76 week old cornish rock chick's and split em with my buddy and when I got home I had one dead chick..... looks like a snake tried to get em but couldnt swallow him. the day before I killed about a 5+ ft rat snake in the coop and patched up any holes I could see. I normally see about 1 snake a week but since I've got the chickens I've seen 4-5 snakes all around the coop. Last night I went pretty crazy with the patching hopefully this will end the losses. My coop is pretty solid but around the bottom it was chicken wire so I replaced it with heavy gauge hardware cloth. I might try the sulfur around the coop to. Will it hurt the chickens if they got in it? If I come home to find another half swallowed chick I'm gonna have to start thinking I trapped a snake in the coop and he's invisible. My buddy said if anymore chick's get killed on my watch he's gonna have to call animal cruelty on me. I might pick up a game cam and set it in there to.