Tara Oceans Expeditions - May 2011. Pelican; Isabela Island; Galapagos, Ecuador; The Brown Pelican is found throughout the Galapagos Islands, skimming over water, plunge-diving and resting in mangrove trees. Brown Pelicans measure around 41 inches in length and have a wingspan of 90 inches. The Galapagos population of the Brown Pelican is said to be an endemic (unique) subspecies of the Pelican Bird.