The first one that was killed, the head was eaten. The second one killed was eaten at the other end. It has to be a small animal and we're guessing a small possum. The darned thing ate some of the second one's insides. I don't know what could catch a Sebright. They are good flying and they are FAST. There was signs of a struggle but whatever's killing them, stays in the coop to eat them. But it doesn't even finish. I don't know if this thing hears me coming and runs away before it can finish it's meal, or if it just likes to kill. I don't know what time this happens but I think it happens in early in the morning. I was out there today at 6:30 and the chicken was already dead. Is there any way to tell how long she's been dead? And if it is a possum, will tuna work to bait the trap? We're putting 4 big Barred Rock roosters in that coop tonight so if it gets in again (it shouldn't though) they can fight it off. I'm trying to sell these roosters and I know this sounds bad but, I'd rather these roosters go than any others. Don't get me wrong, I like these roosters but it's there job to fight for the flock. And I don't think a tiny possum could kill these monsters. That thing is killing all of our bantams first and wait til it sees these roosters in their place. It's going to be an interesting night. We're setting up the box trap in hopes we'll catch it. We're putting the bantams in a different coop where they'll be safer. Wish us luck!