Amph_wetaranus-forms An example of genetic drift. Left - Amphidromus wetaranus from Wetar Island, Indonesia. Right - A form of the same species from a small satellite island off Wetar Island. The red central band found on all specimens of the satellite island form is never found on the Wetar Island form. Photo: Richard L. Goldberg.
This important book is a compilation of the almost 40 years of #elephant research conducted in Amboseli National Park, Kenya. It's a very accessible volume with chapters addressing ecological change, genetic drift, sociality and behavior. A very unique collection of essays written by the top elephant experts in the world. University of Chicago Press - 2011, ISBN: 978-0-226-54223