We just moved to our new little farm and the previous owner left us our two chickens. I've noticed tons & tons of mite-dusting supplies around here (at least 5 different containers, most expired), there also were 3 chickens when we came to see the house early spring, we only have 2. Hen & Pen are pretty unfriendly chickens, I definitely can not go and pick them up, I'm not even really sure about bothering them at night while they are sleeping. Is there anyway I can find out if they have mites with out picking them up? How much is it normal for chickens to scratch or groom themselves? I have noticed they seem to be doing it much more then they were when we first got here, but their whole pen has been cleaned up so I think they are just happier .