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How and Why Species Multiply: The Radiation of Darwin's Finches

by Peter R. Grant and B. Rosemary Grant
Princeton (NJ): Princeton University Press, 2007. 272 pages.

The culmination of over thirty years of research on Darwin's finches by two leading evolutionary biologists, How and Why Species Multiply uses geography, ecology, behavior, and genetics to trace the evolutionary history of fourteen different finch species as they diverge from a common ancestor about three million years ago. David B. Wake writes, "What really distinguishes the book, of course, is the authority of the authors, who have lived with these birds for many years and have unparalleled familiarity with them. Readers will benefit enormously from the scholarship in this book." "[E]xciting and lucid reading," wrote the reviewer for Science.