have just hatched a chick from my Welsummer hen and Barnevelder rooster. if I breed her back to a Barnevelder Rooster, how many generations before I can call it a purebred again? Just ordered eggs from Boer Johan, so should have a fresh bloodline in the fall to mate her with. Also have to same question with my BCMs and Welsummer mixes, in with a pure Black Copper Marans rooster. thanks for any responses.