I don't want to put a damper on things, but this breeder doesn't sound right to me. Doesn't respond to your emails, and is worried the birds could catch a human illness (not possible).
I would REALLY be sure your baby is 100% healthy before bringing it home, and get a guarantee on that. Could be just a hobby breeder who knows less than he/she should, but still, would worry me.
Baby is beautiful though

. Oh, and Riley is a surname in my family, on my Mom's side... so for me it means both men and women

.
Athena