I am happy to report that my broody produced seven bouncing baby Black Javas last week, and over half of them have yellow soles. That is a big relief. I only have one yellow-soled bird out of 8 pullets and 7 cockerels. This hatch was a random sample of eggs from all or most of the pullets, fathered by the yellow-soled cockerel. Based on the ratio of yellow-soled chicks the pullets must be split for yellow soles (carrying the recessive gene for yellow skin/soles, but showing the dominant gene for white skin/soles). It was a 50% hatch rate. 14 eggs set under the broody. One got broken a week before hatch, 7 hatched healthy chicks, 5 were totally clear and 1 was rotten. (The innards looked more like blended cottage cheese than an egg when I opened it. Glad that wasn't the egg that broke in the nest.)
This was a test hatch to take advantage of a determined broody. Now the more serious breeding begins. The breeding pens are almost ready. First up will be some individual pairings of my two best pullets with the yellow-soled cockerel, then some individual pairings with those two pullets and my biggest, widest cockerel. In a few more years I hope to have larger, wider birds with yellow soles and dark eyes. Then I'll start working on combs and wattles. I'll try to improve the hatch rate over time too. I'd rather it be 75% or higher.
Woohoo! Aren't you glad you're finally at the point where you can start seeing more fruits of your labors?