I have an EE hen that has been a bit lethargic lately. I have her separated now inside the coop, in a box with a heat lamp. Only thing she seemed interested in this evening was bread. Yesterday her crop was full though, and it did seem like she had eaten some sunflower seeds and food today as well. Last night I noticed a section of feathers on her lower back that looked strange under the red heat lamp. It was just the top part though, so I assumed it was from being pooped on. However, tonight more feathers seem to be affected, mostly on her left side. Here and there, some feathers appear to be rotting away from the tip. They just crumble and fall off. On her lower back area, a large clump of "rotted" feathers came off. I won't know more until tomorrow when I can see her better, but what could it be??? My chickens free range, and I haven't noticed this on any of the others. Could it be lice??? I treated the flock with Adam's this past summer, and that worked well.