I have cinnamon queen hen that when I got her a month ago was missing some feathers on her neck, just on one side from the under her waddle to part way up the side of her neck. It does not seem like she has lost anymore but now when I go out at night to close up coop she shakes her head. I looked for lice but can't see any and none of the other hens have it. The coop was just built so wouldn't have been in it. The hens are around seven moths old. And she is still laying everyday and no other problems. Any ideas? I can try to take a picture in the morning. No open sores at all.