Over the past several days I have been tortured every time I go into my back yard. Something is eating me alive. I did get bit by yellow flies yesterday and the day before, but I saw them. Last night and again this morning I went out and within a few minutes was broke out in welts and itching like crazy. I saw nothing landing on me! No mosquitos or yellow flies out today. Could there be mites or some other critter that I can't see. I would have posted this in the predators and pests board, but the pests are preying on ME not my chickens. Let me put it this way, there is no evidence my chickens are bothered at all by whatever is bothering me. No missing feathers or acting itchy, anyway.