I put my pullets in the big coop because it was too hot in the shed that they are originally in. The older chickens did not seem like they even cared at all about the younger ones and so i had no concern. I came out about 45 minutes later to check on them and the older chickens pecked one too death and another one to where it had no skin on most of its body. I ended up having to kill that one my self. The other pullet was fine but still has some marks. I thought chickens were really cool at the beginning of the day now I am starting to feel like they are just nasty disgusting animals.