Windshield phenomenon
The windshield phenomenon (or windscreen phenomenon) is the observation that recently fewer dead insects accumulate on the windshields of people's cars.
The windshield phenomenon (or windscreen phenomenon) is the observation that recently fewer dead insects accumulate on the windshields of people's cars. It has been attributed to a global decline in insect populations caused by human activity.[1]
A 20-year study measured the number of dead insects on car windscreens on two stretches of road in Denmark from 1997 until 2017. Adjusted for variables such a time of day, date, temperature, and wind speed, the research found an 80% decline in insects. A parallel study using sweep nets and sticky plates in the same area positively correlated with the reduction of insects killed by car windscreens.[10]