I have one roo and 12 hens, all about the same age (9-10months). Some of my hens have bareback patches, which I suspect is from the roo doing his business. However, my roo is also completely bare backed, and I don't know why this would be. I have seen some of the girls peck a feather off, but this was once he was pretty bare. Do you think they pecked off all his back feathers? Here's a pic so you can see exactly what I mean... Thanks for looking!