I get mine in the first week of June and do them the Saturday before Thanksgiving. I really watch their diet to keep the growth slower. If at all possible, I let them free range. When they are loose, I only feed them once a week so that they know where home is. If I do that I do check them often to make sure they are getting enough to eat (and during this period they make a huge dent in the grasshopper population as well as eat all of the apples falling from the trees which cuts down on yellow jackets hanging out under the apple trees. About a week before processing I lock them up and feed them grain and lots of apples. My toms have been in the 17 - 20 pound range, and the hens are 12 - 15 pounds. I also have 2 older hens, one is spring 2011 hatch, the other is spring 2010. I have been raising them this way for about 18 years now, and never had leg or heart problems with them except one that got a broken leg. But hers was when a roof collapsed under snow and she was trapped under the roof.