New member here; I may be slow but have finally clued in to the fact that one of my 3 hens, a barred rock, is losing feathers. I had noticed the presence of a few small feathers in the run for several week, but just discounted it as insignificant. Today, after being gone for 5 days, I can see that the loss is becoming noticeable, especially around the neck area. She's only 8 months old, so that's too soon for molting, yes? Best I can tell from a quick peek, the feathers are breaking off, leaving the shafts behind. I noticed no bugs or skin issues. The activity level, feeding, poop and general behavior has not changed. My other two hens seem unaffected. I house the three birds in a large dog house, with pine shavings, with adjacent, movable run. They get free-range time most days. From reading the posts, I'm leaning towards mites/lice. I need to do a more through check, I'm sure, but wanted to see if anyone have any other suggestions Thanks!