I'm not sure and was as confused as you sound. I think it's a combination of all you stated. Mine feathered out very nicely by week six, I believe it was, and actually looked good. Bought mine from Meyer hatchery and fed flockraiser-green bag- the whole time. They had some free ranging, but not a lot. They weren't cramped in the pen either. Plenty of room to roam around if they wanted.