I have a question that hopefully others here can help answer. I have been trying to research exactly what breed or breeds would make the best free range chickens. I consistently come up with Dominique and Rhode Island Reds and Plymouth Rocks. Now this said it would seem to me that the Black Rock / Black Star / Black Sex Link - would tend to be as good as it gets in this regard, being half RR and half PR. However questions about this breed. 1) Does anyone have experience with them, especially in this application? 2) Does anyone have experience in breeding back these black stars to themselves across generations? If so do you have any photos or information of what the 2nd, 3rd, 4th, 5th generations might look / act / be like? 3) I notice that a PR rooster is supposed to be 9.5 pounds - and a RR rooster 8 ounds. However many hatcheries show a Black Sex Link rooster at 8 pounds. Is there something that makes them - shrink? I would think a rooster would be the average of these two weights - around 9 pounds. Am I missing something? Any other thoughts and ideas about this would be appreciated.