That is fine, Curt, I have no shortage of bubbles.
I have been fooled by nature sounding artificial many times. Of course the
first thing I thought was birds, but then I started thinking about the aerial
drone test range that is currently under development not too far (20 miles or
so)from this recording location. The increasing interest in drones for police
and hobbyists is likely increasing the pressure of anthropogenic presence on
natural soundscapes.
John Hartog
rockscallop.org
--- In Curt Olson <> wrote:
>
> I hate to burst your bubble, John, but I'm almost certain it's ducks. I've
> heard this exact sound hundreds of times in northern MN when small "V"
> formations of Blue-winged Teal fly overhead.
>
> Curt Olson
>
> John Hartog wrote:
>
> > Hi Mike,
> > Yes, an oblate spheroid shape intuitively makes sense to me.
> > While testing my newest windscreen design this spring, I may have
> > discovered that UFO shaped windscreens may inadvertently act as decoys
> > attracting actual miniature UFOs. (of course I think I am just kidding...
> > maybe)
> >
> > Just take a listen what I recorded this spring out on remote public lands
> > in Central Oregon the middle of the night. I believe this is anthronoise
> > from an aerial drone - not natural sound.
> > http://snd.sc/U9BV3X
> >
> > The wind screen is pictured in the cover art.
> >
> > John Hartog
> > rockscallop.org
>
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