At what point in the egg laying cycle is an egg fertilized? For instance, if I have a hen I want to breed that lays every second or third day, does she need to be mounted the day before, the day of, or ”X” number of hours before the egg is laid, etc? I know how to check to see if an egg is fertilized once laid, but I may want to ”lock up” my perspective parents together to make sure I get the fertilized eggs I want at the right time. Any help is appreciated!