It's been about a week that I've noticed one of the hens losing feathers behind the neck. Two days ago, I've noticed what appears to be white-ish scales near her eyes and one on her beak. Several weeks ago, she laid a couple of eggs and is always being jumped on by those friendly roosters. These are two symptoms (losing feathers and possibly scales) that I'm not sure what the cause of it is or if they are related. She does have quite of an appetite and there are no other symptoms I can see. Please tell me what I can do or if there is a simple antidote or cause. Our feed store does not supply medication nor medicated feed for chickens and we have no avian vet. What is causing this and what can I do? These chickens are free-roaming. The eat on their own and roost in the trees at night. I throw some feed for them - not a lot as they can find more healthy eating on the ground between the seeds and insects. Based on a scale of 1-10, my knowledge on chickens are 2. I need your help or suggestion.