I read this too.
But I understood that’s the scientist best guess (theory) but even they aren’t sure why.
If the birds could imitate the sound of rain hitting the ground I could buy it.
The birds aren’t tap tap tapping their feet down multiple times per step, they shift their weight multiple times with each step.
I guess I miss labeled this thread.
I hand more intention of starting a thread about odd birds around the world not just this bird with an urge to dance.
Like the Kiwi.
Lay’s the largest egg per body size.
has nostrils (nares) at the very end of it’s long beak to smell prey underground.
New Zealand and Australia have so many odd and unusual birds it was nice to see North America didn’t get left out.