I couldn't find any recent posts about chickens with sparse feathers and red butts, however that is what I have on probably 5 or 6 of my hens. Some are not red but just sparse feathering. I have examined them for mites and did not find any parasites. About a week ago, I did find worms in one of the droppings so I immediately wormed all of them with Wazine 17. They were definitely round worms. The problem started before I found the worms. I have been putting some wound powder on the bottoms that looked red. There were some very old posts that said the cause could be feather picking or mites or stool burn or molting. It's just that I do not only have one but several at the same time. I have had a lot of broodies and because of the worming and trying to break the broodies, I have not had as steady egg production but I'm sure everything will eventually return to normal in that department. I took the shavings out of the nest boxes and put in nest pads to discourage the Broodies from liking the nests. I feel like all of this is somehow connected. For all of them to do this at the same time is strange to me. Question is: Is this normal?