I have a 4 week old Barred Cochin pullet that is 4 weeks old. She has been in the brooder with 4 other 1 week old chicks with no issue, They have all been together for a week with no problem, She actually is very motherly to them :) So I got 3 new 3 day old Silkies today and put them in with the other babies, and the "momma" Cochin is pecking them really bad. It makes me nervous that she will kill them. Is this normal? I love my new babies and don't want them hurt. Will this 4 weeker stop this anytime soon? They do have the red light which I thought would minimize this. Any advice? I don't want to have to get rid of my Momma bird.