Flies frequently collide with windows due to their inability to distinguish between real and reflected objects. When a fly encounters a window, it fails to recognize it as a barrier and will persist in attempting to fly through it. Furthermore, windows often reflect the sky and surrounding environment, which can disorient flies and cause them to fly towards the reflection rather than the actual sky. This conduct can be exasperating for both the fly and humans, but it is solely a consequence of the fly's restricted visual perception.
