So I'm crazy and want to "make" my own Golden Comets. I understand that they are obtained by crossing a white rock with silver factor hen with a New Hampshire rooster. I can find plenty of New Hampshire roosters and plenty of white rock hens... but how do I know if the hens have the "silver factor"? Does it really matter if they have the silver factor or will any white rock hen give me good results? Any help would be great. Thank you!!