I have ten Dominicker pullets and one Dominicker cockeral that are eight months old. About four months ago, they started losing their feathers. It appears to be mostly on their backs right around their tail feathers, with some loss around their vents. I have checked for mites and came up with nothing. It's very odd because I have some Easter Eggs that I bought as chicks in June and they have all of their feathers. They are all in the same run together. I thought it was just the Dom Roo's fault until he started losing his. I have some pictures, but don't know how to upload them to this. Any ideas? I live in the south, but it does get pretty cold here sometimes in the winter. I just don't want to lose them!!!