I am an urban chicken owner. My 3 hens (the Dixie Chicks) are a 1 year and 5 months old. . They are free range pretty much all day and in their coop at night. They receive fresh water, organic chicken feed, worm treats and treats they find in our yard. About 3 months ago I took my Barred Rock Emily to the vet concerned about her feather loss and behavior. He said molting and gave me Baytril to give her twice a day. She started getting her perkiness back, and there was some feather growth. Also, none of my girls molted at the same time. It is November now and she still is losing feathers and has permanent bald spots. It is like her feathers grow at bit and break off and never grow back. Lots of dander as well. She has no tail feathers, no substantial wing feathers and loss of her down feathers. She will not perch with the other 2 hens because she can fly to the perch and sleeps in a in closed area in the coop where they usually lay eggs (which they haven't laid any eggs since Sept.) and now for warmth since we are in the high 30's (central Florida). This week I took her to my avian vet again (he did study poultry in vet school) and he immediately was concerned and said he had never seen this feather loss in chickens before. He said he had seen it parrots. It is a virus in which they loose all their feathers and eventually their beak. He was not aware of a cure. He took pictures and sent to a University. We are still waiting for the results. I think it has spread to my Buff Orpington Natalie, but not Arcaucana Martie or our rooster who does not live in the coop. We have no idea how she could have gotten this because we have no other farm animals and they stay on our suburban downtown lot. We love our girls so much and are very sad. They are so attached to each other as well. If ANYONE has seen or heard of this before and can provide any in sight, we would greatly appreciate it!