Hi, I have 3 guineas I keep with the chickens. When I brought home my first guineas I noticed hey had some feathers missing, some with barely any tail feathers then their was my male.. I thought it was a female but I think I may be wrong.. anyways I have 1 female and 2 males that ALWAYS get along, I'm always monitoring them and they haven't even started breeding yet. They're about 6 months old. My male has missing feathers on the back, has always been like that.. I don't understand why or if he can survive the winter like that..