Windshield phenomenon
Insect population indicator
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Why this is trending
Interest in “Windshield phenomenon” spiked on Wikipedia on 2026-07-20.
Categorised under History, this article fits a familiar pattern. History articles often trend on anniversaries of notable events, when historical parallels are drawn in the news, or following popular media portrayals.
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Key Takeaways
- The windshield phenomenon (or windscreen phenomenon ) is the observation that fewer dead insects accumulate on the windshields and front bumpers of vehicles since the early 2000s.
- use of pesticides.
- In 2016, Canadian naturalist John Acorn noted that the phenomenon had recently become a meme but questioned whether it is "reasonable to assume that windshields can tell us something about the overall numbers of insects" and also that "humans are notoriously bad at detecting trends".
- Entomologists stated that they had noticed that they no longer had to clean their windshields frequently.
- One insect collided with the plate for every 8 kilometres (5 mi) driven.
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Source summary
WikipediaThe windshield phenomenon (or windscreen phenomenon) is the observation that fewer dead insects accumulate on the windshields and front bumpers of vehicles since the early 2000s. It has been attributed to a global decrease of insect populations caused by human activity, e.g. use of pesticides.
As early as the 2000s it became a commonplace observation among drivers that after a long drive, windshields no longer had to be cleaned of numerous insects. In 2016, Canadian naturalist John Acorn noted that the phenomenon had recently become a meme but questioned whether it is "reasonable to assume that windshields can tell us something about the overall numbers of insects" and also that "humans are notoriously bad at detecting trends". The windshield phenomenon was discussed widely in 2017 after major publications and other media reported the topic of reductions of insect abundance during the last few decades. Entomologists stated that they had noticed that they no longer had to clean their windshields frequently.
In 2004 the Royal Society for the Protection of Birds (RSPB) asked 40,000 motorists in the United Kingdom to attach a sticky PVC film to their number plate. One insect collided with the plate for every 8 kilometres (5 mi) driven. No historical data was available for comparison in the UK.
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