As for your cornish rock, you must cull it before 6 months of age or it will start having all sorts of health problems such as heart attacks, broken legs, etc. Cornish meat birds are genetically specified to grow fast for meat; faster than their poor bodies can handle. I though a first glance it was a whit leghorn, but cornish meat birds have very distinct short bodies and fatter legs
Actually, many people have successfully kept their Cornish X chickens around for quite a while. You have to limit feed and make sure they can't just sit and eat, but it can be done.


