Speciation: An Illustrated Guide

There is a dizzying diversity of species on our planet. From genetic evidence we know that all of those species evolved from a single ancient ancestor. But how does one species split in to many? Through the evolutionary process of speciation, which begins when populations become isolated by changes in geography or by shifts in behavior so that they no longer interbreed. This video illustrates the speciation process in birds to help you understand the basis of earth's biodiversity.
Copyright 2013 Cornell Lab of Ornithology. www.birds.cornell.edu