The Capercaillie (Tetrao urogallus) has a really extraordinary song, best d=
escribed as sounding like someone uncorking a bottle of sparkling wine, fil=
ling a glass, then hearing the bubbles fizz. Truly beautiful, if you are a =
female Capercaillie. =0D
Anyway, the terminal fizz part is accompanied by a strange infrasonic burr.=
=0D
All this was described years ago by Scottish scientists in a paper in the I=
bis journal.=0D
=0D
Richard Ranft=0D
The British Library=0D
London =0D
-----Original Message-----=0D
From: "mipartitus" <>=0D
Sender: =0D
Date: Tue, 14 May 2013 12:58:40 =0D
To: <>=0D
Reply-To: =0D
Subject: [Nature Recordists] Re: The lowest frequency sound know from any b=
ird.......=0D
=0D
Hi Marc,=0D
=0D
I measure a fundamental of, on average, around 40 Hz in your Southern Casso=
wary's call. Given that the fundamental is the strongest harmonic in this c=
all, except at the end where it goes down to 20-25 Hz, that is indeed *very=
* low for a vocalization. Near-infrasound.=0D
=0D
I hadn't heard of such low vocalizations in birds, but it turns out it has =
been described already:=0D
=0D
Title: Low-frequency vocalizations by cassowaries (Casuarius spp.)=0D
Author(s): Mack, AL; Jones, J=0D
Source: AUK Volume: 120 Issue: 4 Pages: 1062-1068 DOI: 10.1642/0004-=
8038(2003)120[1062:LVBCCS]2.0.CO;2 Published: OCT 2003 =0D
=0D
If you are interested and don't have access to Auk, I can send the pdf to y=
ou.=0D
=0D
If there are people that know of avian vocalizations below 40 Hz, I'd also =
be very interested in hearing about it.=0D
=0D
Best, Gabriel=0D
=0D
--- In "wildambience" <> wrote:=
=0D
>=0D
> The Southern Cassowary's call is apparently the lowest frequency known so=
und from any bird (if you can think of another contender I'd be interested =
to hear about it). =0D
> =0D
> I recorded this sample from a captive bird in a wildlife park near Sydney=
, Australia - all I had on hand was my Canon DSLR and this is the resulting=
audio file, not great but I was happy that the miniature mic even picked i=
t up. Would love to record it again with some decent gear if I get the chan=
ce!=0D
> =0D
> https://soundcloud.com/wildambience/southern-cassowary-casuarius=0D
> =0D
> Hearing the call close up is incredible - sounds more like an large mamma=
l than a bird!=0D
> =0D
> Marc Anderson=0D
> http://wildambience.com=0D
>=0D
=0D
=0D
=0D
=0D
------------------------------------=0D
=0D
"While a picture is worth a thousand words, a =0D
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.=
=0D
=0D
Yahoo! Groups Links=0D
=0D
=0D
=0D
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