On the subject of Charles Darwin and the Galapagos, most people inevitably picture the archipelago's famed giant tortoises or speciose finches. However, it is a little known fact, even among most biologists, that Darwin's initial evolutionary insights were inspired by neither of these. Rather, it was a much lesser known group of birds -- the Galapagos mockingbirds -- that first captured Darwin's attention and catalyzed his thoughts on the roles of geography and adaptive radiation in producing new species.