Hi we have partridge Chanteclers..LF and adore how docile they are...Im actually a Canadian living here in the midwest..lol...defected but still have a farm up there in Niagara Falls area..lol...an example of using a bird with good genetics..lets see...well lets deal with a black rooster with some red leakage in the hackles now when he is under i year it is a dq but when he becomes a mature rooster he can be shown with red in his hackles as many develop that after their first molt...many shy from using those birds but often that red will help make the black blacker as in give it a more green sheen....you would have to ask Suze on how it all works....if a bird is of the lines you want let say its George Mihalik who has bred some of the best silkies ever....you have the opportunity to get some of that blood via a bird who maybe is not perfect as in the crest might not be big enough or the rooster has a bigger comb than you like or the cushion is maybe not so large so the bird is an average breeder bird but whose good genes can often come through in your offspring....you can have two of the not so great looking silkies produce the best showbirds and you can have showbirds who never produce anything of quality...silkies are fluffy aliens and are their little gene pools are the washing machines of the chicken world......as for culling that is a delicate subject I love the birds so much but if any of them develop wry neck i put them down ...i do sell pets as i get people who just want a pet for their enjoyment who looks nice just has a dq for showing....and if i have too many roos who i cant find a place for or i think they just should not be bred I send them to an auction where no one knows where they came from and I am just a number. I drop them off and leave they send me a check. I feel sad when i do it but i cant feed them all and this way our name is attached to them.