I've read various posts ranging from keeping one rooster to ten hens up to one rooster to twenty hens. I'm wondering if this refers to the same size breed. I have a total of nineteen one and two month old silkies and bantam cochins, up to large breed BO, leghorns, etc. I only know one is a rooster so far. I planned on letting the different breeds stay together. Will a large rooster try to breed a small bantam hen? Do you still keep the same ratio without looking at breed size? I am hoping I will not need to keep the sizes separate. Anyone one with mixed sizes together?