Adult cactus finch (Geospiza scandens), one of the 15 species of Darwin's finches, on Isla Santa Cruz, Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

One of 18 species of Darwin's finches, Punta Pitt, San Cristobal Island, Galapagos, Ecuador, South America

One of 18 species of Darwin's finches, Fernandina Island, Galapagos, Ecuador, South America

One of 18 species of Darwin's finches, in the Highlands, Santa Cruz Island, Galapagos, Ecuador, South America

Giant Tortoise with Yellow Darwin Finch on its shell, Giant Tortoise Reserve, Santa Cruz, Galapagos, Ecuador, South America

One of 18 species of Darwin's finches, Punta Pitt, San Cristobal Island, Galapagos, Ecuador, South America

One of 18 species of Darwin's finches, Fernandina Island, Galapagos, Ecuador, South America

Galapagos Finch on Giant Tortoise shell, Ecuador, South America

Darwin Finch bird feeding while on a rock, Santa Cruz, the Galapagos Islands, Ecuador

Darwin Finch bird, Santa Cruz, the Galapagos Islands, Ecuador

DarwinFinch bird, Santa Cruz, the Galapagos Islands, Ecuador

Darwin Finch bird perched on branch, Santa Cruz, the Galapagos Islands, Ecuador