The feather lost didn't start until after they were without a rooster. I had moved them to my daughter's house for 3 months while we were on vacation. Now are back home for 4 months but feather loss got worse. The rooster has only been here for about 3 weeks.
I have been raising chickens for awhile but newest problem is that several of my hens are are missing most of their back feathers. I think is because we lost 2 roosters so they started jumping on each other A LOT!! I tried some goop that is supposed to cover the skin but the feathers aren't...