I have 3 RIR, 3 SLW, 3 Buff Orps and 3 Leghorns. They just turned 16 weeks old yet no eggs. From what I've been reading on other posts is that I should expect eggs around week 18. Is this true? If so, I'm probably too impatient. I just want to see my hard work get rewarded with some fresh eggs. I've already got my first recipe on stand-by.