Why are there so many dead flies in my window?

I was destined to write this article. I look at fly-infested windows with people every day.
My son-in-law Kevin Blauth investigates proteins by playing with the genetics of fruit flies as a doctoral candidate in a laboratory at the University of North Carolina. My youngest daughter’s boyfriend Karl Wyant studies insect habitats in the soils of Arizona as a doctoral candidate at Arizona State University. And most compelling, my marvelous (yet now perturbed) Maggie came to me this morning wondering why so many dead flies congregate in the window sills of her new town-home.

So that Maggie’s builder might get through next week unscathed, and you might be well-served, I thought I’d look into flies at windows. I’ve …