Mayflies are Here

It has been many years since I have lived in this region and experienced the mayflies! They just cover everything, but don't do anything else. They don't last very long either.
I took a couple of pictures from inside the house, these were just sitting on our windows outside. I thought I would do a little search about these insects. It turns out they are a sign that the water is of good quality. You can read more about these on Wikipedia and on Nature .