"barred rock" is an easy to replicate pattern because both black and barring are dominant. If you crosses a Legbar and any black breed (australorp or black Ameraucana, for ex), all the resulting chicks will strongly resemble a barred rock hen in coloration - even though that color is not present on either parent.
Actually, that is only true if the cock is the Legbar, if you used a Legbar pullet and a Black Am roo, you would get black sexlinks, with only the cockerel chicks looking like barred rocks.
You run circles around me on genetics, lol...our flock has a black australorp rooster also, he is 1st roo, Grayson is 2nd in command, we have a few black hen mutts, 2 black jersey giants and 2 barred rock, along with our light sussex, white rock (hens and roos of each of those two breeds) and 4 busybody buckeye hens. It seems 80% of the mix chicks we get are black or barred, the rare white and red one show up and an even rarer grouse looking one...I have to admit, I am pretty partial to the mixes, very forward little critters, always interesting to watch them develop.
I currently have a group of 5 pullets which hatched on New Years Day that I really should be advertising for sale, but they are so cute running around and begging I have been dragging my feet....

And I haven't sold Gracy's Thanksgiving chicks either, there are two pure Silver Pencil Plymouth Rocks and a barnyard mix pullet...I want them to stay together and I am worried someone will only want the SPRs and sell off the BY pullet and she would be lost without her sisters. ..
I'm getting soft in my old age....
