There are many endemic species on the island of Puerto Rico. There are many different species of frogs, birds, snakes and even some mammals. The reason is a process called endemism. Endemism is the ecological state of a species unique to a certain part of Earth, such as an island. An endemic species is different from a native species because it is not found anywhere else. Because an island is very isolated from the mainland, endemic species can grow and evolve more than their mainland family members because there are fewer predators. The Puerto Rican parrot is one of the endemic species of Puerto Rico, hence its name. . The parrot stands approximately eleven inches tall and weighs approximately 9 ounces. It is a predominantly green bird, with a red forehead and white rings around its eyes. Their irises are brown in color and their legs are yellow-beige. Males and females have a predominantly green coloring, their main flight feathers are dark blue. The feathers visible only during flight are bright blue and the tail feathers are yellow....