I didn't know where to put this so it's here. I plan on getting some coronation sussex and lights, as I understand correctly about breeding chickens. I can't breed these because they're brothers & sisters so I will have to get another hen or roo. If I get just another hen or roo to breed with my original group, can I then breed those chicks with my original group or do I need to completely keep the 2 bloodlines separate? At what generation can I breed the 2? I hope that made sense because now I'm getting confused.