[wnoise]

> Mouritsen thinks, that the reason those warblers left Tennessee was not because they heard wisps of a distant superstorm but because of changes in atmospheric pressure.

Sound is changes in atmospheric pressure, and we're talking about infrasound which is really low frequency, so there's not exactly a sharp distinction here.

[Dylan16807]

There's still a pretty good distinction here. The baseline pressure actually changing vs. the pressure rising and falling every 4 seconds over and over.

[ahazred8ta]

TLDR - the pigeon problem coincided with high-decibel infrasound from sonic booms from the Concorde SST. That suggests they were temporarily deafened in that frequency band. (At 11 octaves below middle C, they're sensitive to anything over 0.1 Hertz.)

[Dylan16807]

Is it actually possible to be specifically deafened at such a low frequency? There's no resonance down there, and it would be so much lower energy. I would expect all other hearing to be severely and possibly permanently impacted before infrasound could be deafened.