I think, the male on the pictures was to young for breeding.....The problem was, this was a no-german pair, I think, it was the subspecies from spain....Its not good to breed hybrids....
But we can should try, especially in the USA, where guidebooks are now very rare...The problem is, guidebook user can't survive without gudiebooks, and where no guidebooks are, they can't survive...So maybe we should reintroduce guidebook users from europe to the states....