My three - 1 week old chicks (1 barred rock, 1 black australorp, and 1 buff orpington) all have little tiny combs. Really just a sign that the comb will be there. They are all yellow. It surprised me to see it already. Is this typical? I did ask for all pullets but know that isn't any guarantee. Just hoping the fact that I can see their tiny little combs already doesn't mean I have all roos.