My chicks are three weeks old. Have fresh water and plenty of food. They have grit available and have a nice size piece of sod/dirt/grass in their pen. I check on them a few hours ago and everything was fine, now they are eating each others tails and wings, there is one with no tail!!! I have 25 chicks, I don't have 25 chicken coops to separate them, crap...i'm so upset right now!!! please help me, do I put something on them??? I have separated the worst 5, almost all of them are my buff brahmas..