I have a batch of eggs in the incubator hatching. The eggs came from barred rock hens. Most of them were covered by a barred rock roo, but there was a white crested black polish roo in the pen as well. My first egg to hatch is a beautiful silver little baby. I read somewhere if you cross a barred rock hen with a black roo, the male offspring will be barred and the female chicks will be solid colored. Does this hold true for this hatch? Can I assume this chick will be a blue girl? Chicken genetics confuse me