what do you call brillant flying? not in sight when letting them out for an hour or so? young birds need to be flying really well and strong before training them mate. For me also way to early to be training ybs, my ybs bred in feb are only flying for 15-20 mins, wouldnt dream training them untill closer near yb season. I often take my lazy birds on short tosses like sillyness at the bottom of the street, trust me ive lost some from this distance, and you'll never see them again, you may get them back, but really need to know how was they flying before hand, i hope you get them back mate