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DO try this st home.

Started by Dave, June 21, 2018, 10:03:02 PM

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Dave

If you have an outside light that attracts moths sneak up on them and rattle a bunch of keys. See what happens.

[spoiler]The jangling of the keys produces short ultrasound chirps similar to those of bats. Seems that some moths take immediate evasive action, flying loops, sudden turns or simply folding their wings and dropping to the ground. Those that never evolved these tricks are called "food".[/spoiler]

(https://www.bbc.co.uk/programmes/b0b6hrl3 "In our time" on echolocating by bats)
Tomorrow is precious, don't ruin it by fouling up today.
Passed Monday 10th Dec 2018 age 74

xSilverPhinx

I am what survives if it's slain - Zack Hemsey


jumbojak

That's a neat trick to show kids. Thanks Dave!

"Amazing what chimney sweeping can teach us, no? Keep your fire hot and
your flue clean."  - Ecurb Noselrub

"I'd be incensed by your impudence were I not so impressed by your memory." - Siz

Dragonia

Oh yeah, we are definitely trying this! I'll let you know if we see anything cool.
Be kind, for everyone you meet is fighting a hard battle. ~ Plato (?)

Icarus

^ God works in mysterious ways.