NATURE: The Hummingbird Effect

Costa Rica's motto is Pura Vida - Pure Life - and this deceptively small country is bursting with some of the most spectacular wildlife and pristine ecosystems in the world. All this diversity thrives, in part, thanks to one surprising little creature: hummingbirds. Producer: Bill Murphy, Janet Hess, Filipe DeAndrade, Ann Johnson Prum, Doug Shultz. Narrator: Harry Shum Jr. Author: Doug Shultz