Not laying eggs in nesting box

[Rcasady]

I have 11 hens (3 that are 2yrs old, 4 that are just over 1yr and 4 pullets just starting to lay. They free range on my property and I haven't gotten any eggs in the nesting boxes. I know they are laying someplace we can't find. We lucked them in their run/coop for the last 2.5 days but I still haven't seen any eggs even from my hens that are supposed to be daily layers. When should I worry they aren't laying? How long does it take to re-train them?

 

[aart]

Leave them locked up until you see eggs.
If you are in the northern hemisphere, the older birds may well have stopped laying and getting ready to molt.