Has anyone ever seen anything like this? Very red and irritated looking but not hot to the touch, not scaly and does not appear to be painful. This hen is perfectly healthy in every other way. Eating, drinking, pooping, laying normally. No mites or lice. The feather loss is from the roo. It cannot be sunburn, she is in the shade 99% of the time. The redness is all the way under the tail too. Anything suggestions?