Our chickens are a year old. We had lice a few months ago, I treated with permethrin and all has seemed to be well. The first time I actually saw the lice, and one of my girls had red, irritated, flaky skin. This time, while checking our BO, I found this orange stuff at the base of her feathers. Any thoughts what this might be? Their bedding is wood shavings, I don't think that is what it is, but providing some background.