Galápagos Land Iguanas on Santiago Island have not been seen in significant numbers since Darwin's visit in the 1830s. On Santiago Island in the Galápagos National Park, land iguanas have been returned to the wild and are actively breeding, 187 years after Charles Darwin last observed a healthy population there. On Santiago Island, one of the Galápagos Islands far off the … [Read more...] about Iguanas, Last Seen Thriving By Darwin, Have Returned and are Reproducing on a Galápagos Island.