Do your eggs shrink since it's been getting colder out? I believe mine have! I have red sexlinks and RIRs. They've all been laying consistently for weeks now, so I don't think that's an issue. I haven't changed their feed and they always have access to Oyster Shell. I live in Southwestern Pa, where it's been 30's- 40's at night. And I haven't noticed any molting, yet. Let me know if you've noticed this or what may be the culprit.