that last bit tells me you're either old or have hearing damage: we have some bats around me and despite never once seeing them it's plainly obvious to me that they exist thanks to their shrill squeaky calls in the twilight.

https://www.youtube.com/watch?v=X4eqkaHkTAI

[–] norbert@kbin.social 11 points 5 months ago (2 children)

Linking to a guy using an expensive ultrasonic mic to hear bats doesn't really support youe statement that you're hearing bats around you despite never seeing them. Maybe you have hearing damage?

[–] currycourier@lemmy.world 4 points 5 months ago

I mean if they do I'm kinda jealous of their newfound ultrasonic hearing abilities

[–] Swedneck@discuss.tchncs.de 3 points 5 months ago (2 children)

he literally says in the video that their calls range from 20kHz to 200kHz, with 20kHz being the normal top range of human hearing for someone without hearing damage.

[–] norbert@kbin.social 4 points 5 months ago

WHAT?

[–] can@sh.itjust.works 1 points 5 months ago

Note: hearing damage includes being over thirty.

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