I am curious about the final feather color of chicks from a specific combo. I had a blue Marans rooster with gold leakage. He came from a blue cuckoo roo over a blue marans. He covered a sapphire hen (crested cream legbar over a white leghorn). I let a broody hatch out 2 of her eggs. The first chick hatched out black with a very sharp head spot and the Marans fluff on the legs. Does this indicate a sexable chick? Both parents probably have a cuckoo gene......would a head spot mean a male or female? And should I expect a cuckoo coloration?