Laying patterns for double yolkers?

[7chickininas]

Nice Egg

I hope my RIRs have big eggs like that. They are about 17 weeks old and one of them has a big comb and wattle (very red also).

This one is Cleo

 

[speckledhen]

You will get those nice little glitches with new layers frequently, but some lines are genetically predisposed to laying double-yolkers. For instance, my RIR/Buff Orp cross pullet comes from a line of Buff Orps who have that habit. She did lay them frequently at first and occasionally still does.