Galapagos Author:David W. Steadman, Steven Zousmer An excursion to the Galapagos Islands Charles Darwin (1809 - 1882) explored in the years 1831 - 1836. With paleontologist and ornithologist David W. Steadman as guide, descriptions of native vertebrate species, resident bird species are illustrated with watercolors by his brother, Lee M. Steadman. A superlative account.