Hello. I am concerned about our Arcauna, Cookie. She is eleven weeks old. She has lived with five other birds and tended to be the dominate one. Two weeks ago we added our birds to another flock of similiar ages. Yesterday we noticed that Cookie is missing a large number of feathers on her back. Her skin is dry and flaky and there are new feathers coming in. The feather surrounding the bald spot are looking almost like they are dying. They are getting dusty and kind of matted. Where the feather meets her skin, it is dusty, almost like a cobweb-if you know what I mean. She is also running scared of the other flock, which she has not been doing previously. I sat with the pullets for about one hour this morning. I did not notice any thing I would consider out of the ordinary in terms of pecking, just a little but here and there. Cookie, herself, did turn a couple of times and seemed to lightly poke around the area as did two of the others birds from her original flock. At first I thought it might have some thing to do with pecking order getting worked out. Then I thought maybe she was pulling them out herself. I also wonder if we actually have a rooster in there but am not sure it they are two young at this point for that type of behavior. My biggest concern is that she may have some sort of disease that will transmit to the others. We are going to make a "saddle" for her and see if that helps. Feedback is appreaciated.