Thanks! I suspect that is the cause. I haven't seen anything that looks like mites/lice or nits on at the base of feathers. The Chicken Chick website has some really good pix to use for comparison and I see nothing like it on my own birds. My girls have a 7X4 covered run and a larger (7X15) uncovered run for space. However, their indoor roosting/nest box is smaller than I would like for 5 birds. I don't see excessive pecking during the day but they may be pecking in the morning if they aren't let out right away. I will post some pix later today just to get a few more eyes on the situation.