Raising chickens is a new learning experience for us! Thus this question: Is it normal for RI Red's back feathers to turn white or grayish. Both girls have large spots on the top of their backs. My Black Sex Links look fine. The only change in routine is that we've left the heat lamp in their smallish coop on a couple of really cold nights! They are all 8 months old. Could they be molting? Should I worry or take action? Can anyone help?