mine are 29.5 weeks and only 2 out of 7 are laying right now. 2 have had red combs for a while and the other 3 aren't even close. so it may be just that they aren't ready to lay yet. I have cochins and Brahma's that haven't laid yet and they are late layers. My EE was just over 20 weeks when she started to lay and my Salmon Faverolle was just over 22 weeks when she started.