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)
Poor moths :lol:
That's a neat trick to show kids. Thanks Dave!
Oh yeah, we are definitely trying this! I'll let you know if we see anything cool.
^ God works in mysterious ways.