have been identified in Cuyabeno, such as more than 350 fish species, including piranhas; a great variety of reptiles such as frogs, caimans, anacondas and river  turtles . Frequently observed species include various birds species, such as colorful  macaws ,  parrots, hummingbirds,  kingfishers  and  hoatzins  or the  Harpy eagle , which flaunts