I have 40 chicks in a 25 square metre coop, 6 weeks old. The coop is secure so I'm really at my wits end...something has completely severed one of the chicks legs. The leg is just missing. Could it be the chicks doing this? I so,bed the situation of them pecking each other and they haven't done it for a few weeks so no sign if pecking. This is the 3rd chick it's happened to. After it happened to the other 2 chicks I moved them to a larger more secure coop. I just can't believe it as the leg almost looks like it was ripped of from the body. The last chick it happened to is the biggest of the bunch and looks really healthy still despite this bad injury. I've treated it with penicillin. Please advise as I'm really desperate to know what's happening to my chicks. In the meantime I've seperated them into 2 smaller coops.