Eggs were small cream colored. I seriously thought it was one of my AC hens that laid it. The Ameraucanas and Ameraucanas Light Brahma mix are the only white hens.
So can’t be the EE per egg size and color.
I agree about ruling out any chickens that lay blue or green eggs.
The red sexlink lays huge cream to brown eggs.
RIR lays big eggs.
So I’m thinking amer/brahma mix due to color or one of the other Brahma mixes due to the smaller eggs the lay.
I guess I could care less, just really would like to see into the future and know if it’s a hen or roo. That will make a difference if I can keep. Just wish I didn’t get attached.
I don't see any way to tell male vs. female by any sex-linked genes, so you'll have to wait until it grows a bit more to know that.
As regards who is the mother: short answer, any or none of them.
Longer explanation of the genetic reasons I think this:
(If my logic has any flaws, hopefully someone else will notice them and figure out the right answer.)
There are several genes that cause white in chickens, but they work in different ways:
--Dominant White turns black into white, except that it sometimes misses a spot here and there. Chickens called "Paint" often have this gene, with selection for having it leave more black spots. This is the gene I think your chick has.
--Silver turns red/gold into white. This is what Light Brahmas have, and what the white-and-black chickens in your photos have. This gene has no effect on black, just on red/gold shades. So in a chick with the genes to be all black (inherited from the Ayam Cemani), having the Silver gene will make no difference to what color the chick actually is.
--recessive white removes all color from the feathers of the chicken. It tends not to leave any colored spots showing, so the black on the chick back is a good indication that your chick does not have this gene. Because this gene is recessive, a chick must inherit it from both parents in order to show the white. If your Ayam Cemani rooster and one Ayam Cemani hen were BOTH carrying the recessive white gene, then you could get a white chick from that pairing (but they are probably NOT carrying this gene, and anyway the chick has too much black.)
I was thinking the chick showed Dominant White, which would mean that none of those hens could be the mother, because none of them have Dominant White. Crossing any of them to the Ayam Cemani should give just black chicks, although the chicks might show a bit of other-color leakage as they grow.
But as I look at the photos again, maybe the chick does not have Dominant White after all, based on how much black is showing in the wing feathers.
But if the chick does not have Dominant White, then it is showing Silver with a pattern of black, and that means it cannot have the Extended Black gene that Ayam Cemanis are supposed to have (makes a chicken black all over, is dominant over any genes that would allow a pattern like that to be visible.). So to get that color chick, the rooster would have to be carrying a wrong gene. And if he is carrying the wrong gene, and the hens came from the same source, one of them might be carrying a wrong gene as well-- so the chick might actually be from an Ayam Cemani hen after all. Or it might come from any of those hens who could lay that color of egg, because probably any one of them could produce a chick of that color with a rooster who looks like Ayam Cemani but actually carries some genes that are wrong for his breed.
Are you sure there were no other roosters that could possibly be the father? (The dark skin color on the chick does make it likely that it has one or two Ayam Cemani parents, unless you've got a Silkie or an Ayam Cemani-mix that could be involved.)
