New here! We have six black austrolorps that are about 7 weeks old. One, who is probably the smallest, has really scraggly looking feathers. They almost look dirty. I have inspected their coop/run for red mites and didn't see any or any signs of them. I also looked for lice on her and again didn't notice any. A few (probably 6 or so) have fallen out in the last two to three days. She acts, eats and poops normally. Any other ideas?