Any pointers on distinguishing a roo from a pullet as Polish Crested chicks grow? I have three chicks already showing lovely crests at only three weeks of age. All are very healthy and robust....no one showes a comb yet. The blonde has a tail feather that is already two inches long and it stands straight up in the air like a flag. The little red chicks have no tail feathers yet.. Could tail feathers be an indication of a a roo?