Why do birds like to poop black on white cars and white on black cars?

This article was reviewed by Zhao Xumao, a young researcher at Lanzhou University

"If you walk under a tree, shit will come from the sky"

Have you ever been hit by bird poop?

Although the probability of this is very low

But bird droppings on cars happen all the time.

The car owner can only admit that he is unlucky and has no choice but to bear it.

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But have you discovered an interesting phenomenon?

The white bird droppings are always seen on black cars

And there is black bird shit on the white car

Why is this?

Let’s take a look together below!

It turns out that you can’t blame the bird for this situation.

You can only blame the color of your car.

In everyone’s perception

Shit and urine are separate

However, the mixture of bird urine and feces

The white part is urine

The remaining dark part is bird poop.

(Except for ostriches, which excrete feces and urine separately)

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The reason why this phenomenon occurs

It is derived from the body structure of birds

To reduce weight during flight

They have no teeth, colon, bladder or urethra.

As a result, they can no longer hold their poop and pee, and poop as they eat

Flying and pulling

In addition, they are used for flying

You also need a lot of protein

When protein is digested by them, uric acid is produced.

Uric acid is slightly soluble in water

So it will appear as a white crystal

Now, do you understand?

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