Karl Miller <[log in to unmask]> wrote:
>Thinking about that...I do wonder about bird songs...I know very little
>about them, but I wonder how large their "repertoire" might be.
There is an excellent and fascinating book and CD, "Why Birds Sing" by
David Rothenberg. www.whybirdssing.com
Another book and CD, The singing Life of Birds by Donald Kroodsma, ISBN
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