From what I have read on the subject, the Barred hen passes on the barring gene on the Z chromosome(essentially like our X chromosome). Females carry ZW chromosomes, opposite from mammals where the male carries the heterozygous sex chromosomes XY. Because the barring gene is on the Z chromosome, a female barred hen can only give the barring gene to her male offspring, so if the rooster is non-barred, none of the female offspring will have the barring trait which is what makes them sex linked.I think ALL BSL's carry the barring gene, isn't that how they make sex-linked birds? A barred with a solid? I have a barred hen and a barred cockeral (with feathered legs) right now that could have only come from my BSL hens and a BCM roo.