I think there is a failure to communicate. Its "sex linked" not "female sex linked" The male has two of the chromosomes. The female has only one. When a male had two copies of the "sex linked" chromosome he passes ONE to the male offspring. This is the identical chromosome that a female "sex linked" passes. Now, the chromosome that is sex-linked has "dominant" traits, which in this case are dosage dependent. The belief is that a sex linked male is passing on one sex-linked chromosome to either male or female offspring (one dose of the dominant traits), so if there is no second dose in a pure cross, one cannot distinguish male ftom female, since both only have one chromosome (dose). Not so fast, since these traits are not true "dominant" but "dosage dependant" you have other genes making other proteins which interfere or "bleed" into the "dominant" (higher dose), since the threshold for "dominance" has not been reached. Therefore, roosters will have some variation in color from "dominant. THIS is why you see the colors bleeding through in the adults. No arguement there, right? ....and it happens in chicks. The chicks that have one sex-linked (from either parent) and only one will look the same and be " srandard" for a sex linked cross. Now, if you see color variation that is not "standard" guess where it has to come from? Thats right a non-sex linked chromosome. That is the only possibility.