On the 1500 hectares (3800 acres) research island Barro Colorado in the Lake Gatun of the Canal you find the best researched tropical forest and of the best protected rainforest of the region. On a 40 min. boat ride from Gamboa you reach the research station. A naturalist guide (English or Spanish) from the Smithsonian takes you on a walk to explain the functioning of this ecosystem and how scientists from all over the world unravel the ecological connections in the rainforest. Usually several rainforest mammals and sometimes birds such as great Tinamou and Crested Guan can be seen. A visitors center informs you about research projects and achievements of the Smithsonian Tropical Research Institute. (Full day tour, including pick up from your hotel in Panama City, if wished.)