Agami Heron with her chick, one of the rarest birds in the world, there are only five nesting sites in the world. Pacuare Nature Preserve is the only known nesting site in Central America. They are so scared and frightened by humans that it took 15 years for these birds to become acquainted to human visitors. Pacuare Nature Preserve, Costa Rica. Canon 7d ii Canon 70-200 f/2.8 ISO 800 f/7.1 1/80 of a second