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Study Catches Birds Splitting Into Separate Species
webdoodle writes "A new study finds that a change in a single gene has sent two closely related bird populations on their way to becoming two distinct species. The study, published in the August issue of the American Naturalist, is one of only a few to investigate the specific genetic changes that drive two populations toward speciation."
Keep in mind that the criteria for speciation is, itself, somewhat arbitrary and there exist few fine borders in nature for classifying things. These birds CAN produce offspring, but behaviorally, don't. This may be where some creationists get confused, thinking of dogs and cats and fish, etc in terms of some sort of central "essence" of an animal, when in reality the borders exist mostly in human minds.