It's a TRAP!
Winged insects of the animal kingdom all seem to govern to this very odd law, i'm not sure if it has a name. They all seem to be able to fit through the smallest gaps and holes you could find, but then they're defeated by an incredibly common foe... an open window. This little bug spent about half an hour just smashing and crashing into a window when there was a wide open one next to it.
- Nikon D7000