When does the a-laying stop?

[HollyDuckFarmer]

My mixed flock of Pekin, Rouen, & KC are laying well. I only wish I could figure out who is laying which egg! Between the KC and the Pekin, well that is pretty obvious due to size... But it's hard to tell who is laying and who isn't.

 

[Onewiththeducks]

It's exciting when you get your first egg, isn't it?