You would probably have to get it DNA'd. In order for it to be a boy, the father would have to be split to cinnamon or visual for that mutation. In order for it to be a girl, the father and mother would both have to be visual for that mutation. The father can also be split for it as well, but the mother can't be split for cinnamon. Since the dad is just a normal pied, and the mom is a cinnamon, then the cinnamon baby could be either a boy or a girl. Something interesting worth noting though is that the father is split to cinnamon since he had a cinnamon chick.