Bob and Charles respond to a very important question about using bird sound playback from a listener. They also have a listener suggestion on a way to support Sara Dykman, the author of Bicycling with Butterflies. Related episodes: Merlin Magic, Nuttall's Woodpecker, What It's Like to Be a Bird with David Sibley and Bicycling with Butterflies with Sara Dykman Our sources for this episode include: TEDxBozeman talk by Charles van Rees: A glance through nature's playbook Merlin App by The Cornell Lab Proper Use of Playback in Birding by David Sibley Sara Dykman's Go Fund Me Campaign: Counting Monarchs in Mexico

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