I'm new to owning chickens, and my flock has something, but I'm not sure what. My fellow chicken friend came over a few weeks ago and said they have mites. She suggested I sprinkle a little DE on them at night. It's been about two weeks and I'm about to put my third round of DE on these birds, but they haven't gotten any better. I'm starting to wonder if her advice was off? The DE doesn't seem to be working. My second in command has it really bad (she's the last picture.) Her skin looks horrible. I don't want anyone else to progress to her stage. It looks nasty. What does this look like to you? How should I fix this? I want to get this cleaned up right away- I've been messing with this useless DE for too long.