Yesterday we added a little chick to our group of 4 (one will be leaving as he is a roo) and it's not going so well! Our biggest chick is about 3 weeks, maybe 4max and she is crazy rough on the new little wee one. Last night I sectioned off a spot in the brooder and put the baby and another chick together. It worked well. I took out the divider in the morning. All day our new little chick has taken a beating form the big bully of the bunch. So...the bully is in seclusion for the rest of the night. I'm using chicken wire to separate them so they can still see each other. It's going fine. So who 'should' be getting the time out? No blood being drawn, the little one is just....so....little I fear she will get hurt, is really being picked on and can't get much sleep. In a week or so when the newest has gained some size to defend herself do I try it again, or so I just keep trying daily? If I take the bully out all together for a day or so and then re-introduce her would that be better?