Flies or gnats?

word in the alpaca community is that these things that I thought might be barn flies are actually gnats. I thought they were kind of big to be gnats, but I guess they grow bigger in prime conditions. Alpaca owners all over the country are complaining about how bad they are this year (phew! At least this isn't the norm). We are keeping up with all we have been doing with the bates, tape and DE. It seems to help but still, I wear a hat everytime I go to the barn as I hate them flying around my head. They don't seem as bad in the barn in front of the fans so at least the alpacas can get a break.