I just got done checking the whole flock (10 of them) with a flash light. I also ran paper towel under their roost. Absolutely no signs of bugs. They have a 12x8 indoor coop attached to a 12x12 outdoor run. I'm going to start giving them meal worms (they were getting strictly organic crumble and organic scratch but I started giving them feather fixer because no, she isnt the only one with crappy looking feathers. Only 2 look just fine). I might start free ranging next but I'm concerned about hawks (lots of them here in Nevada) as well as a young cat that has "adopted" us. A little more back info, I just got rid of one chicken because she was pecking on 4 of the birds to the point of lost feathers and blood. Those birds are healing up nicely but the bird in the picture above now has a patch of missing feathers by the base of her tail. I'm really at a loss of what I'm doing wrong! I keep their coop very clean and take good care of them. Any advice is greatly appreciated.