Hi Marc,
That is a fascinating call. By lowest "sound" do you mean vocal calls stri=
ctly? If this is open to mechanical calls as well, one of my favorite low =
frequency bird calls is the 60 Hz drum call of the Roughed Grouse.
Lang Eliot has a nice example of the roughed grouse here:
http://musicofnature.com/ruffed-grouse-drumming/
John Hartog
rockscallop.org
--- In "wildambience" <> wrote:
>
> 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).
>
> 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!
>
> https://soundcloud.com/wildambience/southern-cassowary-casuarius
>
> Hearing the call close up is incredible - sounds more like an large mamma=
l than a bird!
>
> Marc Anderson
> http://wildambience.com
>
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