Thanks Bernie, is this what you=92re talking about?
> On 3 Feb 2018, at 22:16, Bernie Krause [naturerec=
ordists] <> wrote:
> Mostly, it sounds like common species of what, in English, are called wat=
er-boatmen (Corixidae). These can be found everywhere there is fresh water =
and decaying floral debris in vernal pools, in shallow water by ponds and l=
akeside, and even by the curb after a spring or summer rain, etc.
> We first encountered these signatures in late March, 1984, at Mono Lake j=
ust east of the Sierra Nevada Mountains along the Eastern border of Califor=
nia while recording the Great Basin spadefoot toad (Spea intermontana) in a=
study for the University of California in Santa Cruz led by the late Ken N=
orris (who identified how dolphins generate and receive echolocation signal=
s). We were recording to see if the tadpoles generated sound (they do), and=
if the vocalizations of the adults carried in water as well as air (they d=
o). At the same time, we picked up these odd scraping sounds (water-boatmen=
) but couldn=92t identify them, at first. But after filling some buckets wi=
th water and mud from the pond, and sifting through the material, we were l=
eft with the water-boatmen and were able to record them separately, thus fi=
guring out the source.
> Wild Sanctuary
> POB 536
> Glen Ellen, CA 95442
> http://www.wildsanctuary.com <http://www..wildsanctuary.com/>
> SKYPE: WildSanctuary
> FaceBook: http://www.facebook.com/BernieKrauseAuthor <http://www.facebook=
> TED Global talk: https://www.ted.com/talks/bernie_krause_the_voice_of_the=
>> On Feb 3, 2018, at 1:20 AM, <calandrella5=
> [naturerecordists] < <n=
>> Below the links to soundcloud for two of my underwater recordings from I=
>> Sounds are similar to that of your recording, but surely emitted by diff=
erent species of small aquatic insects.
>> https://soundcloud.com/marco- pesente/corixa-punctata-sound <https://sou=
>> https://soundcloud.com/marco- pesente/micronecta-sp-lesser- water <https=