My BO is about 23 weeks and still no eggs. She still looks like she has some growing to do though... maybe she's a runt. My RIR's starting laying at 20 weeks but we "helped" them by moving them onto laying feed. My uncle (old school farmer man) said the hormones in the laying feed "jump start" the laying process. Best luck- I can't wait for my little BO pullet to become a HEN.