Can flies recognize that I'm holding a flyswatter?

themeatbridge@lemmy.world to No Stupid Questions@lemmy.world – 226 points –

Has this ever happened to you? There's a fly in the house, buzzing around you, so you go to the cabinet to get the swatter. But as soon as you start wielding it, the little bastard disappears. You set it down, and now he's back, taunting you.

Ok so obviously flies don't taunt, but do they have the capacity to recognize, even instinctually, that I'm holding a deadly weapon?

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I just clap above them. Then they often fly an inch or two upwards... and get squished

I've never been able to execute that successfully. Also not as easy to do when they're on a vertical surface or the ceiling.

This is true. But i have a fly swatter as well. Its just not alwayd near me and so i often end up just attempting to clap them.