Just wondering. I have bred a Crele Cuckoo roo to a Partridge hen, so far I have 5 chicks (because of a staggered hatch) 3 sort of resemble a Partridge chick in a way but the other 2 are black with a white spot on the back of their heads. Just wondering if this cross would be a sex link. I was doing this hoping to get hens to look more like the roos. Maybe this will work, any input will help. Thanks.