Roger J. Lederer is a Professor Emeritus of Biological Sciences at California State University, Chico, whose academic specialty is the field of ornithology. The holder of a PhD from the University of Illinois, he has published over thirty scientific research papers and written more than six books.
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When we see a bird flying from branch to branch happily chirping, it is easy to imagine they lead a simple life of freedom, flight, and feathers. What we don't see is the arduous, life-threatening challenges they face at every moment. Beaks, Bones, and Bi... SEE MORE