Hi Shaffer and thank you for your response. I do know how to test the genetics - I just wanted to make sure I had it correctsamouw,
You should test mate all you cock birds for sure to a bird that has no muffs and beards. You can use any breed hen to do this. One hen to one cock bird and hatch at least 10 eggs. This will expose the ones that are only carrying one gene for muffs and beards and give you at least a cock bird that is pure to use. You can do the same with the hens but if you have 10 hens it would be a large task to do so.