Mere fear shrinks bird families

["Jim Morgan" fundador_four]

Another reason for not using playback.

Excerpt from article:

Song sparrows protected from attack but subjected to recordings of
predator yowls and leaf-crunching approach noises raised 40 percent
fewer offspring.....

Full article:

http://www.sciencenews.org/view/generic/id/336823/title/Mere_fear_shrinks_b=
ird_families

Jim Morgan
Prescott, AZ









"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.



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