Ok, so I was out building the new coop for Tigga(new EE chick), that will become a broody coop when I have the little one integrated. I had Tigga(in a pet carier) spending time with the big girls in there pen when I heard a comotion. At first I though that some how Tigga had gotten out of the pet carier, but to my relief s/he hadn't. The big girls had caught a mouse, clearly killed it, and where fighting over it. I didnt' even realize that we had a mouse problem as I hadn't seen any signs. So I felt the need to intervene as it was getting a little vicious and I dind't want blood drawn, so I grabbed the one with the mouse at the time (turned out to be Meenie) and pulled her out of the pen. I tried to get the mouse away from her as I had never heard of chickens eating them, but she ate it before I could do anything about it. I put her back in the pen and continued my work. A few minutes later they had anouther mouse, so again I pulled the one who had it out (this time Eenie), and she ate the mouse too. So, has anyone ever heard of chickens doing this, or are mine just weird? And should I worry about the mice, or just let them take care of them?