We have 4 "Ameraucana" chicks and 2 Blue Andalusian chicks that are 3 weeks old. This is our 2nd round of chicks that we've hatched and my family and I are trying to play the educated guess game about their genders. Yes, I know it's very early, but we are looking to keep only 2 pullets from these 6 and the others are wanted by another family. So, what I'm seeing is that both Andalusians have the beginnings of their combs. We have never hatched this breed before, so we don't know if both genders get their combs early (pics of adults do look to me like they develop pretty big combs) or if we have 2 roos. With the Ameraucanas we see one with the beginnings of "his" comb and the other 3 don't have anything. We have hatched some mutt Ameraucanas previously, so we have seen that those cockerels seemed to get going on their combs much earlier than the pullets. So, we'd love it if anyone out there with Andalusian experience would weigh in. I know it's a guessing game, but that's part of the fun.