This morning I went down to the coop and all 14 of my Guinea were grooming, itching picking at themselves. I just went to check again and and they are all still doing it. They are eating and drinking fine. They are almost 8 weeks old. I didnt try to grab any and see closer if they have anything on them. Is it even possible? They havent even left their brand new coop how would they get mites or lice? What should I do? Or is it just the way Guinea's are?