I have 3 female pullets that have been laying eggs for about 2 months now. I want to breed them with a cock from another chicken keeper nearby. The plan is to bring the cock to my hens for a few days of being male and female chickens in a run/free range environment. My question is: Do hens store sperm for any period of time (assuming fertilization) or do they start laying fertile eggs within their next laying cycle? Local ordinances prevent owning a rooster so we know we have 3 pullets, and want to get them back to infertile egg production (for human consumption) soon after they meet their first male. Any info would be appreciated while I'm still in the planning stages of this project.