"Rules" for breeding Bourke mutations

[AerieAviary]

We have been breeding Lady Gouldian finches for a while now, and know that reputable breeders do not breed together certain mutations, like blue to blue, pastel, or silver, white breast to white breast, etc. Are there any such "rules" for breeding Bourke's parakeets? We have about a dozen now that we've acquired from two former breeders needing to sell off their flocks, to include a pair of opalines, 10 rosies, 2 normals, and a pink. We know little about their history, but it does seem like the opalines gravitate towards one another and I would not be surprised if they were a breeding pair in their former home. Is it ok to set them together when we're ready to breed them? Or should they be paired with a rosy or a normal? Any other "rules" for breeding mutations we don't yet have would be vastly helpful, since I've found little on the topic elsewhere.

Thanks!

[Monica]

As far as I know, there are no "rules" to breeding bourkes, although I'm not a breeder and haven't looked too indepth into breeding bourkes, either.

You could try setting up all the bourkes into one aviary, and see who pairs up with whom.

[The Boy With The Birds]

opaline bourkes are a sex-linked gene mutation so there can be no splits.
if you want to breed a good opaine road; opaline toopaline or opaline male to normal hen will all breed pure roseys. But i find top rosies can be bred from picking out the better quality stock and pairing them off. i have a male rosey who has a blue cap! no, not a blue-infusion but just a really nice male!

Pinks are a recessive mutation so splits are very possible. so any other colour or normal bird to be paired with a pink no matter what the chicks are besides opaline. they will be split pink. pink males to cream hens work a treat as either a pink split cream or cream split pink are great birds colour wise to breed with. For creams, cream cock to normal hen produces the best creams.
but there are no real genetic rules.

Zac