Well, crossing fingers they all make it! One of the BCMs is a cockerel and I’d very much like to keep his genetics going.The ones who died around maturity were a BCM and an Isbar, and curiously enough, they were both males. The babies came from a pair of the mixed boxes and could've been more or less anything, so I'm afraid I don't know about those. It's entirely possible I just had really bad luck with them; lots of folks get really beautiful birds from them and never have any problems. I've gotten really beautiful birds from them with no problems. I'd probably even give them another chance if they were having a good sale. Best you can do is love them and give them the best care you can and hope everyone thrives; I'm wishing you all the luck!