We finally got a hot enough day to encourage the paper wasps who nest on the ceiling of our porch to come down and perch on the windows to get a bit of a cooling effect from the cooler air inside the house. The last photo is taken from inside looking out to show the underside and the wing venation. We have had much greater numbers doing this in previous years, but the population has not built up much this summer, I presume because the drought has reduced the amount of insect prey available to them.