I have a hen who had a red rump and broken feathers. She doesn't look swollen and I looked for signs of lice and I don't see any. The area is well below her vent and has a bunch of broken feathers.....or else she's having a weird molt? I haven't noticed her molting or seen any feathers anywhere. Could the broken feathers be from our rooster? And the red be like a sunburn from the sun? Just a little concerned, she doesn't appear to be in any discomfort or showing any signs of being sick. Any advice would be greatly appreciated.