Found this on ebay, any truth to it?
http://www.ebay.com/itm/Cornish-Cro...375?pt=LH_DefaultDomain_0&hash=item4ab46f852f
http://www.ebay.com/itm/Cornish-Cro...375?pt=LH_DefaultDomain_0&hash=item4ab46f852f
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All they did was let Cornish cross grow up and mate. The result would not be uniform growth rate offspring. If they took the larger birds of second flock and allowed to grow up and mate they'd be more uniform. To do this you'd most likely have to limit feed. I suppose those eggs would indicate better vitality as the parents survived to adulthood. but really it's something you could do yourself. I think your better off getting one of the Freedom Ranger type meat birds which would satisfy your clients.