When a bee or wasp repeatedly flies into a closed window while an open window is nearby, it is due to a phenomenon known as positive phototaxis. Bees and wasps are attracted to light sources, and they use natural light cues for navigation. When they encounter a window, their instinctual response is to fly toward the light, which they perceive as an exit.
There are a few reasons why they may not be able to find the open window:
Visual Perception: Bees and wasps have compound eyes that perceive light differently from humans. The glass surface of the closed window may appear transparent to us, but to the insect, it might reflect the sky or surrounding environment, making it seem like a viable escape route.
Conflicting Cues: In nature, light sources are often associated with freedom and open space, so insects are naturally drawn to them. The nearby open window might be competing with other light sources in the room, such as artificial lights or sunlight coming through other windows. This can confuse the bee or wasp, leading them to focus on the wrong light source.
Trapped in a Feedback Loop: Once the insect starts flying toward the closed window, it can become trapped in a cycle. It keeps flying into the window, unable to break free from the loop of positive phototaxis. This behavior is reinforced by their innate instincts and can prevent them from redirecting their flight toward the actual open window.
If you encounter a situation like this, it is generally best to help the bee or wasp find its way out safely. You can do this by opening the closed window further or providing an alternative exit route, such as guiding it gently with a piece of paper or using a container to trap it temporarily and release it outside.