I have been concerned about the behavior of a couple of my young chickens. I've had them since they were a couple days old.. They are gentle, sweet and I don't understand the behavior i'm about to tell you about... I was on vacation a couple weeks ago, and I was told that they killed/attempted to kill 3 others. They were caged with 3 bigger pullets, 5 months old, approx. From what I was told, they pecked at the vents, and pulled the intestines out of the others?! The thought of it, I just couldn't imagine!! What would cause something like that? Has anyone heard of such a thing? I'm now nervous about putting them with the others.