Thank you both for responses. That helps.
Moonshiner can you explain why someone would be mixing the two in a breeding program? I've seen repeated offerings of eggs from mixed porcelain and Isabel pens. What would be the pattern results?
I don't know much about either pattern in Orpingtons.
For me porcelain was know in d'uccles for decades. Its just lavender added to the mille fluer pattern which is buff columbian with mottling.
Jubilee is the same as MF with mahgony added.
As for Isabel IDK where it came from in Orpingtons. Maybe it was pulled from the Jubilee. Partridge can be confusing because it means different things in different countries and to different people.
I'll go out on a limb and say the Jubilee is what is being called partridge with the buff columbian, mahogany and mottled added.
That would mean the Isabel is a stripped down version of the porcelain.
I would assume the jubilee was crossed with a lavender and then bred towards being porcelain. In the process some of the genes were lost which created the Isabel type.
I can see how both came from the same place but at some point the breeder would need to separate the two projects to breed towards true breeding of either.
That's a point when breeding gets more of a pain in the @$$. I suspect those breeders are either new in the projects, not very educated in project breeding or for one reason or another not taking it to the next level.
I would say its not necessarily irresponsible breeding. You'd have to question them and see what they're train of thought is.
Personally I wouldn't want to sell birds from a mixed project without completely explaining my project and what the options would be in someone else continuing it.
