Today I walked into my coop and to my horror I saw my older, bigger hens eating the entrails and carcass of my 3-4 month old silver laced wyanndotte pullet. I have 30 hens in a 12 by 12 coop with roosts over a "shelf" so there is lots of room and many places for weaker and smaller chickens to hide. Also it is the middle of winter and there is 3 feet of snow in there run so they haven't been outside since fall. I have never had a problem with this! What causes cannibalism? Are the bored? Are they to squished? I can always put some hens in the summer coop with some heat lamps. Really I just want to cry! Thank god I walked in then though, I have another 4 3-4 month old silver laced wyanndottes and one had her vent/tail area pecked really badly. Again I have never seen something like this before and I don't know what to do. I have her in my house in a box with food and water. She has been eating and drinking so that's a plus. But what do I do? How do I treat her?