I've never had any issues with my Cornish X or the other ones that had been used for their meat on Saturday. I'm keeping one to hopefully have as just a companion bird and maybe for eggs, but honestly I never had any problems with them. YES they do poop a lot but that's because they eat a lot in order to gain weight for their meat! That is their purpose mostly - they are a fast growing bird, which doesn't make them nasty or disgusting, that's just what they are bred for. They're not mutants or anything like that either. Yes, my Cornish hen Butterball does sit in front of her food dish and eat out of it and make a mess, but it's because she's a chicken and chickens love to eat! I also have her free range and her siblings (before they were butchered) were also free range and they were like any other chicken, but with more upkeep. Also I haven't had any yellowing of Butterball's feathers (nor her siblings). They are indeed smelly birds too, but I think it's all how you bring them up before they are butchered (or if you decide to keep them for eggs.)