The explanation of biophony in my new book/CD, "Wild Soundacapes:
Discovering the Voice of the Natural World," Wilderness Press, 2002,
goes some distance to explain this phenomenon, Horst. Also, my CD,
"Rainstrom in Borneo," captures gibbons, siamang, and orangutans
vocalizing in relationship to one another as well as the other
creature voices in the forest. Both can be found on our web site
(noted below).
Bernie Krause
Wild Sanctuary, Inc.
P. O. Box 536
Glen Ellen, California 95442-0536
Tel: (707) 996-6677
Fax: (707) 996-0280
http://www.wildsanctuary.com
>http://www.nature.com/nsu/031229/031229-7.html
>
>An interesting analysis of bird song duets. I'm wondering how mammals do
>this. I was listening to a Bornean Gibbon last week, which also duets,
>but must have a quite different vocal cord setup, and yet manages to
>produce some phenomenal range of songs and calls (in the 10'000 hertz
>plus frequency).
>
>Regards
>
>Horst
>
>
>
>
>
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