father was a KC show type BC or a would he be whats is more refered to in the UK as a working sheepdog? thats makes a difference, the show type are short and stocky, the working sheepdog(AKA REAL border collies) vary wildly. example, I have 2 purebred BCs that would be considered working sheepdogs in the UK, one could pass for a whippet if I shaved her and the other has been mistaken for a pit bull lol, so tall and streamlined in this case would mean nothing at all for a BC lol