--- In "davem98607" <> wrot=
e:
>
> I am not a biologist or nature recordist, but I do enjoy sound and
> make crude recordings with my camcorder every once in a while.
> Someday when time and budget allow I would like to get into it more.
>
> I recently recorded some Pacific Chorus Frogs (Pseudacris regilla) in
> my backyard pond (http://freesound.iua.upf.edu/packsViewSingle.php?
> id=3D2029). I used a simple binaural mic connected to a digital
> camcorder. I set the mics on the ground right at the edge of the
> pond, and let the camera record for 45 minutes.
>
> In listening to the recording I noticed that quite often the frogs
> seemed to begin their "chorus" when a distant sound began to increase
> in volume. e.g. from an airplane or train. I am guessing the frogs
> are trying to scare off the "competitor" - or was this just a
> coincidence?
>
I have found, in listening to my recordings, that even different species pl=
ay off each other.
Their vocalizations stimulate each other. For example, I made some recordi=
ngs of
oropendulas in Costa Rica. The explosive song of that species would often =
set off that of
a smaller bird, whose call would seamlessly blend in to the end of the orop=
endula's song
-- much like the dueting of tropical birds blends into one song. There app=
ears to be a
network, or organ, of sound out there in the natural world that really has =
not been
studied. I think what you observed was a manifestation of that.
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