I am sorry that I asummed you had never raised meat birds. Sometimes people like to venture over to the meat bird forum that have no intention other than to rag on people for killing birds and not raising them in a "humane" way - ie too dense. The oxymoron I was referring to was when you referred to cornish x as a "small breed" which I thought was funny because I think of them as a large breed. Light yields can come from all kinds of reasons. Stocking density is definitely one of them, but I have raised more than a handful of 50+ bird batches of cornish cross and can confirm that they can do perfectly fine in alot less than 4-8sqft per bird. I know we're not here to discus your flock from years ago so I wont try to parse it out. I do apologize for being so quick to judge. I've obviously been jaded by other posters... cheers