I'm having a problem with my eggs right now. 2 of the 8 girls are now laying. Both have very thin shell. I'm getting some oyster shells tomorrow to help with that. The other problem is a little trickier. Somebody is laying while setting on a perch! I've found 2 eggs under one perch about 2 days a part. How do I stop her (whoever she is) from laying her eggs from up there?!!!