Re: What is a natural sound?

["Rory" rory_ca2]

Bernie,

To be specific, if you have evidence that 20,000-30,000 nesting seabirds on=
 the upper reaches of a rock that rises 30-40 meters from the ocean make a =
collective racket that protects them from predators, just like your frogs, =
and that their collective noise disguising the existence of individual vict=
ims is compromised by a fog horn half a mile away, just like your jet plane=
, I'd love to hear about it.

I'd also love to hear about how this theory applies to the other examples i=
n this thread.

Cheers