I made my nest boxes and installed them today. They are a foot off the ground and measure 14 x 14. Two sit directly under the poop board. I wanted to put a lip across the front to keep some shavings in but I worry that when they jump up to get into the box they won't have enough head room to jump up and over a lip. So do I need a perch? My girls are coming up on 20 weeks. Should I go ahead and open the boxes to them now or wait for the first egg to be layed? Thanks! edited for multiple spelling and grammar errors....this chick is tired! I hope I have some answers in the morning. I'm anxious to get 'er done!