I bought a few new chicks to replace some older hens. I bought 2 Reds, 5 Americanas, 1 black Austerlope and the chick from hell, a Wellsummer. from day one she has picked on all the others. They are now about 3 weeks old and she drew blood on one Americana and is pulling feathers on others. I had to remove her from the group. Is this normal behavior for Welsummers or will she grow out of it? I can't keep her if she is out to kill the others.