Good post R.k..... Couldn't agree more about the best ones being the hardest to breed.... As for the cock running the hen ragged thats normall the case with young stags or bull stags..... He only needs to be with the hen a couple of times a week..... It's also a good idea to leave him on he's for couple days a week.... This will help build he's sex drive and help with fertilely...... More so with older brood birds..... ATB UK