I would leave the parents together to produce more . .finchbreeder wrote: Good luck with this bird and it's parent/s. So maybe the parents need different mates next season to try and pull out a half sib.
LML
And put the hen (which it will be if SLR) to different cock bird in successive seasons
And as Sam says hold onto the cockbirds
SLR mutations are much easier to outcross than AR's
Congrats . . and hopefully this is where the fun (work) starts