I have 4 EE that are now 16 wks old. Some are getting a little red in the face. No squatting yet, but they are skittish so won't let me close to them. I have 4 RSL and they started laying at 16-17 wks old. Should I have the extra nest boxes ready now? They have been sleeping in one sometimes at night to get away from the big girls, instead of roosting. We have one nest box that has been closed off since they were integrated.