Leghorn X Barred Rock - Page 2
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I never did that exact cross, but I did a similar colored rooster (Welsummer) over barred rock hens. They look like typical black sex links.
Thing is, the black on the barred Rock momma pretty much covers any other color. Doesn't matter much what the rooster is, the babies are going to be basically black with either red or silver leakage, depending on the rooster's coloring. Your brown Leghorn male will give red/gold leakage.
Using a buff rooster will give chicks who are kind of bi-colored, that's the best color to hold it's own against black. Pretty much everything else gets overtaken.
Thanks so much!