I don’t know what the f-1 f-2 stuff means but this spring I hatched egg fathered by Ayam cemani roosters. My hens are Rhode Island reds, buff Orpington, golden laced Wyandotte, and Easter Eggers. We hatched about 30 chicks, they are about a month old. Of those chicks most of them are feathered black. There are a couple with some varying amounts of white mixed in. (One has a tiny white patch on the ends of the wings up to one that has a white face that kind of gets blacker the closer you get to the tail.) there is one that appears to be getting a dark brown face and has brown and black spotting. They all have black legs with degrees of light toes. Combs are mostly black but some have yellow areas. There are what look to be single, rose and pea combs. Skin is dark but not as black as the dad’s. Tongues are not black but are darkish in the ones I’ve seen. There are a couple with the puffy cheeks of the Easter eggers. I can post a picture of them in a bit if you’d like?