The way I understand it, a sexlink is created when you cross a solid colored rooster to a barred hen. So I would think that a Australorp roo to a Dominique hen would create a black sexlink, correct? The chicks would be black hens and barred roos? Let's take this a step further. Here's a 'recipe' for creating an autosexed breed: (No, this isn't something I'd be able to do now, I have a very small yard that is filled at the moment with my 4 precious Bielefelders ) What on earth would the F2 look like? Is there any brown to come forward in these two breeds? With the usual autosexed breed, you end up with a brown and gray barred roo and a brown partridge-looking hen. Would a 3rd breed be necessary on the F1 level to introduce the brown? Or is Australorp a bad breed to begin this with?? I may have seen something about needing to have a 'wild type' chick (chipmunk color) for the solid color breed. If so, the Australorp is out.