Hi all, Hoping you can help me figure out what I have going on and a treatment. I have an almost 2 year old Golden Comet with some issues. Late this winter, early spring she starting missing feathers from the front of her neck. I wasn't sure if she was pulling them herself or one of the 3 other hens she lives with was (Barred Plymouth Rock, Austalorp, Rhode Island Red.) I didn't think it was mites or parasites because all the other chickens were fine. I made sure she had dust baths with diatomaceous earth and also tried some Blu-Kote. Didn't seem to be bothering her too much, but they haven't come back. I thought maybe they would grow back at next molt this fall. Then this spring she started getting a bare butt, looked caked with diarrhea. Her butt is missing all it's fluffy feathers, just has some of the larger ones. She's always been my best layer...and kind of skinny because of it. She does seem light but I'm not sure how different than before. I see her eating but think she has stopped laying. They are all let out every day to roam the yard for a bit...the rest of the time they are kept in a 8 ft by 14 ft run, their coop is in the corner. Sometimes when I pick her up it almost looks like she throws up water. I've tried giving her a "spa treatment." Epsom salt bath and then rubbed some Povidone iodine solution on her butt and neck. Doesn't seem to be helping. We are in Kansas, it's been a hot summer...but all the others seem fine. Please let me know what questions you have. In the pictures, I just rubbed the povidone on yesterday so that's why some of the feathers probably look stuck together. Any advice or recommendations appreciated. Thanks!