Is it true that pullets will fluff up (flip up) their tail feathers if you "tump" them forward. Hard to explain what I'm talking about but imagine holding a chicken facing away from you and flipping it's backside up in the air with head pointed downward. I have heard that hens will flip their tail feathers up and fan them out (like squatting for a rooster). I have found that some of my chicks/young chickens do this and some do not. I was wondering if this would be indicative of their gender. Just curious!