Is the hen barred? If so, only male chicks will be barred. If the rooster's the Barred rock, then all his offspring'll be barred.
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Yes. The hens should be black. You can play with outcomes at http://kippenjungle.nl/kruising.html iI have a similar question. I don't even have my new chicks yet, but if I were to take my Buff Orpington roo and cross him over Barred Rock hens, would my chicks be sex linked?