The rooster is confirmed id+/id+(if he had a copy of Id his skin would have been White) he has atleast one copy of the Fibromelanotic mutation(Fm) seems to be golden(S/s+) and Birchen(ER) with Columbian. The white skin hen is id+/- fm+/fm+, the one with black skin is Fm/fm+ id+/-.
When crossed with those hens you get 50% chance of getting more black skin birds, when crossed with the Brahma hen you have 25% chance of getting black skin birds(50% of the pullets, the other 50% of pullets will be white skin and 100% of males will be white skin)
)
