I have two roosters with my flock - I need to concentrate on breeding just ONE with two hens that have been mixed into the flock. After the three have been penned together, how long will it take to assure that the correct rooster is the fertilizer of the eggs? These are Silver Penciled Wyandottes and McMurray only carries them now as part of their rarest of the rare assortment (maybe) and are not included as separate anymore. I love them and want to breed my own. I know this has been discussed time and again, but how does one search for this info? Thanks for a response.