How do houseflies know when you are about to swat them?

Answer 1

Flies return when they are swatted because of the reason they were being pests in the first place. A fly is always looking for food. If the food source was near where they were swatted, they will return for the food.

Answer 2

There are two reasons flies are hard to swat. But, they don't know you're trying to swat them until they see you try to swat them.

Flies have hundreds of eyes. Their eyes are actually a cluster of eyes. Each individual little eye is situated on the main orb at a different angle, so flies can see in any direction. It doesn't matter where you try to sneak up on them from, they can always see you.

The second reason is that the life of a fly is very short; therefore, they live life at a much faster speed than we do. To them, we look like great big, clumsy rocks stuck in quicksand. That's how fast their perceptions and lives are.

It's pretty remarkable that we get lucky enough to swat them at all.

Answer 3

because they have a psychic ability no human has yet been able to compete against. yeah, they have like a wierdd mirror that they can send out any time.

Answer 4

Answer 5

They have huge eyes and great reflexes.