Hi, I have 3 six week old black laced golden Wyandottes. They've been sharing a small brooder with 6 three week old buff Orpingtons. The larger girls are a bit aggressive toward the smaller ones so their brooder is separated by a screen. They have someone been able to knock the screen down while I'm at work and I'll find the six littles huddled in the corner and the large ones right there keeping them in line. I feel like this isn't safe for the little ones and the brooder just seems too small for the big ones. Our coop is very close to being finished, my husband works on it every night after work until dark. Does anyone have a temporary solution for the big ones until the coop is finished?