I have two roosters that I want to use in my Blue, Black, Splash breeding. My plan is to separate them in pens for breeding. My question is, if a hen is out with the flock, including the other rooster and that other rooster is mating her, do I need to separate her for three weeks and then put her in the pen with the other boy? Does she need three weeks in between so that I know that the first boy isn't the dad? Thanks for you help, up until now I've only used one boy for breeding.