I found an egg in the chicken coop today - and it must have been laid by one of our 2 mama hens, who both have chicks that hatched just over 3 weeks ago. I was very surprised to find an egg so soon. The only other chicken who might have laid it is I think too young - I'm not sure, I think she is only about 4 months old.
So I guess there is a great deal of variation in how long it takes for them to start laying again.
So I guess there is a great deal of variation in how long it takes for them to start laying again.