Indeed, the Galapagos have been called a living laboratory ... three others living on cactuses and eating seeds; one living in trees and eating seeds; and 7 species of tree-dwelling insect-eaters.

Iguanas have often been spotted rafting around the Caribbean on vegetation and, ages ago, evidently caught a 600-mile ride ...

The Galápagos Rail (Laterallus spilonota) is a ground-dwelling species that is extremely vulnerable to predators. The species is found only on the Galápagos Islands, where it hides in dense ...

For birds, sound is survival. Their songs establish territories, attract mates, and warn of dangers. When traffic noise ...