I know this is an old post but going to try my chances
Have started breeding Welbars and have my first cross from Welsummer rooster and Plymouth hen. This lot are around 7 months of age. Just looking at this table - is that correct all the black chicks will be pullets and the bars will be cockerels. Knowing the answer to this will allow me to start culling from an earlier age.
I am not large scale so having the room is why I need to cull early. Thanks heaps for any light you can shed on the breeding table.
Yep, it is the basic sexlinked cross. All pullets will be solid black at hatch and the males will be barred/have a white spot at hatching. That is for the welsummer cock on barred rock hens. Keep a cockerel from that mating and breed him to welsummer hens. That will give you some chicks that when bred together will produce welbars. I did a couple breedings from scratch using other breeds and found that most barred rocks are silver which would be good for you in this case. I have a silver ambar hen left from one project, I love the color/pattern.