I'm a rookie and I will be reading up on this thread for all of your advice. I plan to do line breeding and currently have one rooster and 3 hens (all my husband wanted to see if I "got bored" with the chickens. Nope, not bored). I have 2 more Australorps in the brooder from my flock, and 9 BBS Orpingtons to introduce the blue gene into the line with subsequent breeding back to only Black Australorps and keeping the original BBS Orps separated after that. Would I be better off to get more Aussie roosters from another line and cull down to 3 unrelated roosters? Arrange rooster trades with another breeder? My brain is trying to picture how to avoid mating siblings....