I have 5 male Winter Moths currently on my kitchen windows, doing their usual territorial thing with each one on a separate pane. They don't seem to like sharing. When I lived here a few years ago, I had different windows, with more panes, and I have had as many as a dozen or so, doing the same thing. I wonder why?
P.S. And here's another thing - when I switched off the fluorescent light, but left a normal light-bulb on, they all flew off, quite soon if not immediately. Nowt so queer as moths.