This little guy is the worst, but a couple of my other chicks are starting to show thin spots now too! I'm assuming this is from mites (I've never had this problem with chickens before but I haven't raised many!) I figured if it is mites DE should do the trick... problem is I'm worried about "dusting" these guys (assuming dusting means just sprinkling them with DE) because I thought DE was deadly to breathe? Any idea what is wrong? IF it is mites and DE should do the trick, any tips on how to apply it? So far I just put a little in my hand and rubbed it on this guy since he is the worst (the second worst only has 2 pencil sized dots of missing feathers) I'm really anxious and not sure what to do! Can I sprinkle the whole brooder with DE? The chicks are just under 2 weeks (turn 2w on tuesday.) Any help would be appreciated!!!!!