I want to start a small flock of Chocolate Orpingtons. The only breeders I can find that have these birds will only sell straight runs even though they have several different lines they can access. I surely understand selling straight runs because I do also. The difference is simple. Most chickens don't cost as much as rare breeds. If get straight runs without the breeder marking the eggs I risk the almost sure possibility that I could be breeding brother to sister. I am an exotic parrot breeder and know the outcome which will happen sooner or later and I will be weakening my flocks gene pool. Any ideas? Help will be appreciated for SURE!!!!!