I pulled back the curtains on my French doors this morning to find that the glass was covered in mayflies. This is the first time I've seen this many at once around here. The motion of the curtains made some depart, but I can see from my photo of the door that most were still in their skins when I took the photo at 6:30. Several hours later, they had emerged, only their exuviae left behind, except some stragglers that I photographed and am posting here.