Whatever happened to flies on the windscreen?
Whatever happened to flies on the windscreen?
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Discussion

M138

Original Poster:

947 posts

12 months

Wednesday 17th September 2025
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Or front number plate/ front lights?

CooperD

3,078 posts

198 months

Wednesday 17th September 2025
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A very good question. I haven't noticed very many on my car at all this year. I haven't washed it that much either. .

swisstoni

21,632 posts

300 months

Wednesday 17th September 2025
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M138 said:
Or front number plate/ front lights?
Pesticides, changes in the environment, that sort of thing.

When I was a kid in London you couldn’t move for sparrows. Even in the dirty old East End where I lived.
Now they are virtually gone from London and the suburbs.

ScoobyChris

2,252 posts

223 months

Wednesday 17th September 2025
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It’s the windshield phenomenon (no, really biggrin)

https://en.m.wikipedia.org/wiki/Windshield_phenome...

Origami

326 posts

6 months

Wednesday 17th September 2025
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Maybe the flies are just getting smarter and more agile?

M138

Original Poster:

947 posts

12 months

Wednesday 17th September 2025
quotequote all
swisstoni said:
Pesticides, changes in the environment, that sort of thing.

When I was a kid in London you couldn t move for sparrows. Even in the dirty old East End where I lived.
Now they are virtually gone from London and the suburbs.
Yeah, there seems to be some small drains out here in the fens that seem devoid of fish these days.
No short supply of house martins and swallows though. House Sparrows seem to been in decline for years now.

Panamax

7,732 posts

55 months

Wednesday 17th September 2025
quotequote all
Lower speed limits.
Flies are now faster than cars.

DaiB

81 posts

37 months

Wednesday 17th September 2025
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Would you like some of mine?!

Origami

326 posts

6 months

Wednesday 17th September 2025
quotequote all
M138 said:
swisstoni said:
Pesticides, changes in the environment, that sort of thing.

When I was a kid in London you couldn t move for sparrows. Even in the dirty old East End where I lived.
Now they are virtually gone from London and the suburbs.
Yeah, there seems to be some small drains out here in the fens that seem devoid of fish these days.
No short supply of house martins and swallows though. House Sparrows seem to been in decline for years now.
Yes, but the birds aren't real so it's not the same thing really.

Richard-390a0

3,192 posts

112 months

Wednesday 17th September 2025
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Panamax said:
Lower speed limits.
Flies are now faster than cars.
Sound's reasonable to me!

BrettMRC

5,386 posts

181 months

Wednesday 17th September 2025
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Plentiful around these parts!

cerb4.5lee

40,570 posts

201 months

Wednesday 17th September 2025
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I still get them all over the front of our cars, and it does my head in, because they aren't always all that easy to get off.

TwigtheWonderkid

47,664 posts

171 months

Wednesday 17th September 2025
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Improved aerodynamics and cars designed with wind tunnel results factored in, must also reduce the numbers.

Sausage roll

141 posts

75 months

Wednesday 17th September 2025
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M138 said:
swisstoni said:
Pesticides, changes in the environment, that sort of thing.

When I was a kid in London you couldn t move for sparrows. Even in the dirty old East End where I lived.
Now they are virtually gone from London and the suburbs.
Yeah, there seems to be some small drains out here in the fens that seem devoid of fish these days.
No short supply of house martins and swallows though. House Sparrows seem to been in decline for years now.
We used to get house martins nesting under the eves of our house every year - in all honestly they were a bit of a nuisance due to the mess their droppings made. But they didn’t arrive about three years ago and there have not been any since or in the surrounding area. We live in a village surrounded my fields, so probably another indication of lack of flies etc as the house martins don’t have anything to feed on.

otolith

64,542 posts

225 months

Wednesday 17th September 2025
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"New analysis from the 2024 Bugs Matter survey has highlighted further alarming consequences for insect numbers in Kent: the number of flying insects sampled on number plates by citizen scientists has declined by a massive 67% since 2021. "

https://www.kentwildlifetrust.org.uk/news/bugs-mat...

M138

Original Poster:

947 posts

12 months

Wednesday 17th September 2025
quotequote all
Sausage roll said:
M138 said:
swisstoni said:
Pesticides, changes in the environment, that sort of thing.

When I was a kid in London you couldn t move for sparrows. Even in the dirty old East End where I lived.
Now they are virtually gone from London and the suburbs.
Yeah, there seems to be some small drains out here in the fens that seem devoid of fish these days.
No short supply of house martins and swallows though. House Sparrows seem to been in decline for years now.
We used to get house martins nesting under the eves of our house every year - in all honestly they were a bit of a nuisance due to the mess their droppings made. But they didn t arrive about three years ago and there have not been any since or in the surrounding area. We live in a village surrounded my fields, so probably another indication of lack of flies etc as the house martins don t have anything to feed on.
Tbh this year was the first time I’d seen quite a few in years, never beenshort of swallows though which I assume also feed on flies. Red Kites are more common round here than Chaffinches these days.

Origami

326 posts

6 months

Wednesday 17th September 2025
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Now you mention it, I rarely need to clean bug splats,
I used to have to all the time a few years ago.

Maybe confirmation bias but I suspect not

thecremeegg

2,068 posts

224 months

Wednesday 17th September 2025
quotequote all
The opposite for me, not had to clean flies off for a good few years but this summer I've had loads. Friends have noticed the same, way more insects this year than previous.

kambites

70,350 posts

242 months

Wednesday 17th September 2025
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Whilst I don't doubt that the number of insects is falling due to overuse of pesticides, I wonder if improving aerodynamics has also played a part? I guess the better attached the boundary layer is to the car, the less likely insects are to actually make contact?

My father-in-law's car is constantly splattered with insects, but that's both an older car and in a country which probably uses fewer pesticides so it's not very conclusive of anything.

swisstoni

21,632 posts

300 months

Wednesday 17th September 2025
quotequote all
kambites said:
Whilst I don't doubt that the number of insects is falling due to overuse of pesticides, I wonder if improving aerodynamics has also played a part? I guess the better attached the boundary layer is to the car, the less likely insects are to actually make contact?

My father-in-law's car is constantly splattered with insects, but that's both an older car and in a country which probably uses fewer pesticides so it's not very conclusive of anything.
Number plates haven’t really changed though.