The Warbler Guide: A Book Review by a Warbler-challenged Birder
10,000 Birds
JUNE 4, 2013
It’s the difference between pure text and visuality, between presenting the whole and focusing on the prime details. Donald Kroodsma employs them in his books about bird song; the Cornell University Lab of Ornithology promotes them and offers a link to Raven Lite , free software that allows you to visualize sound.
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