I have 4 barred rock pullets that I purchases from TSC. They are 13 weeks old this week. Two of them have combs that are beginning to turn pink. Two of them do not have any change in their combs. I have two barred rock cross cockerels that are the same age. It has been evident that they are males since the age of 5-6 weeks of age. My question . . . . Is it possible that 2 of my pullets are not pullets? Is it normal for purebred cockerels to wait longer to show 'maleness' ? I dont have a camera, sorry. And . . . . At what age do barred rock pullets normally start laying ?