I have a dozen 7 week old silkies. Use to have 13, but the other day I came home and found one dead (rooster) and another one (hen) laying outside in the rain wounded and dying. The roo was in the corner of the building with the side of his neck ripped open. The others were all sitting on him. The hen has a small hole on each side of her head near each ear (not bad enough to be fatal) and an approx. 2 inch tear on her back where her right wing connects to the body. There was no blood at this wound, but man it looked horrible as I could see the "inner workings" of everything there. She is still alive and is at the vet's being cared for. The vet said the wounds appear to have been made by another chicken. She will likely recover, but may be real gimpy later. I went all over my well fortified enclosure for any signs of entry by a predator and found nothing. Nothing inside appears to have been disturbed by a ruckus/struggle, and there were really no feathers strewn around. This was during the day that this happened. I have one rooster that appears to have matured lots faster than the others. These are 7 weeks old, and he does not have spurs yet. However, I removed him and am keeping him apart just to not take any chances that he did this. Is it possible that he went nuts and did this? I emailed the hatchery where I got them and they said a 7 week old roo won't do this, as they aren't really old enough to be aggressive enough yet. I have never seen him be mean to the others, but he is a bit "pushy" and is obviously head bird. He's a bit larger too. The others are happily remaining in the coop, while he is in a dog crate in my utility room, and the injured hen is at the vet. No other problems have come about since he has been removed. Has anyone ever heard of this happening with young birds? I will find him another home, but hate to get rid of him if I am wrong. The only possiblity may be a rat or snake, and it doesn't sound as if they do this type of damage. The dead roo was not eaten. It just looks like he may have bled to death after the neck wound.