So..... Upon further examination of the birds and discussion with some other local chicken people it does in fact appear to be a gnat problem. They are soooooo bad. I talked to some other people that have been losing birds to them as well. The little bastards are filling the nasal cavities of the birds and suffocating them to death. My coop has pretty good ventilation but i put some extra fans in there to help move the air around faster in hopes that it will help. Thank you all for your input and suggestions and sympathy. I would like to spray something to help get rid of them but I am fearful of having the birds ingest insecticide contaminated insects and dying from that too. Anybody know of any insecticides that will not kill my chickens?