It all depends on the age of your bird. It's not always impossible to visually sex pieds. It depends on which feathers are normal. I have a couple of Cinnamon Whiteface Pieds and they still have a few normal colored primary wing feathers. They are mature females and you can see the wingspots. If it has normally colored tailfeathers they would be barred if it is a hen. Still it depends on the age of the bird. If it is under 6 months a male will look like a hen. Cinnamons are the same as grays with regard to wingspots and tailbars. The only difference between the two mutations is the color the melanin produces. gray as opposed to tan.