Hawks In Flight, Second edition: A Review of a New Version of a Birding Classic
10,000 Birds
OCTOBER 2, 2012
2001), before the videos and web sites, there was Hawks in Flight: the Flight Identification of North American Migrant Raptors by Pete Dunne, David Sibley and Clay Sutton. Pat and Clay also have a blog that you may want to pursue, especially if you are interested in butterflies and wildlife gardening.
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