Costa Rica is practically synonymous with eco-tourism - travel that incorporates education about the environment and promotes preservation of natural resources. The country has a large number of national parks and nature preserves that boast a rich array of birds, mammals, reptiles and rain-forest plants. The variety of birds, in particular, is astounding: Some 850 species are packed into a relatively small area. Approximately 25% of the country's land has been set aside in protected areas, earning Costa Rica a reputation as an environmentally sensitive country and leader in ecological conservation.