I have ten hens and most don't have feathers on their backs. I had a rooster that rode many of them and created this problem. However, since I found the roo a new home, I seem to have additional birds with feathers going missing. I found a hen doing what the rooster did but even her back is loosing feathers. What is going on? Tried the saddle thing when I still had the rooster but it was too traumatizing and so I gave it up. Any ideas?