I thought they had some dirt or shavings on them, but when I saw head flicking, I knew we had a pest problem. Upon closer examination, I see that whatever is pestering my chickens is a tiny flying bug that doesn't appear to be mosquitoes or gnats and are all over them instead of just flying around them. I don't know if the critters are biting them as the birds are showing no signs of blood loss at this point, but the bugs are clearly irritating them. As far as I know, mites don't fly. Anybody know what these pesky buggies are?