As you may recall, we crossed jubilee and gold laced Orpingtons.  We then bred these F2 hybrids to produce F3 chicks.  Theoretically, about 25% of the chicks should express the mottling gene.  We are now beginning to see mottling in some of our F3 chicks and we see some chicks with the correct color combination of black, white, and brown.

 

And here you can see a close up of the mottling; the white has migrated to the tip of the feather.