Not a clue. I have never had any interest in black skinned chickens so would have immediately filed anything about it in the "Do Not Remember Bin".@R2elk do you remember who was wanting to know about sex link black skin in chickens? I remember you and @duluthralphie were talking about CRS and me because I couldn't remember where I seen it. Now I can't remember who was looking or what thread.
But I found a new thread where compost king talks about it https://www.backyardchickens.com/threads/ranger-breeding-project.1382235/page-3
View attachment 2187127