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Bats are some of the least well understood mammals, yet they play vital roles in the ecosystem. PHOTOGRAPH BY FEDERICO RIOS, NATIONAL GEOGRAPHIC![]() |
Juan Fernando Diaz, a mammalogist and expedition leader, carefully plucks a bat from a mist net, with the help of two former FARC rebels. PHOTOGRAPH BY FEDERICO RIOS, NATIONAL GEOGRAPHIC![]() |
Scientists photograph a Xenodon rabdocephalus, or false fer-de-lance, a venomous, rear-fanged snake. PHOTOGRAPH BY FEDERICO RIOS, NATIONAL GEOGRAPHIC![]() |
The Colombian lesserblack is a large bird spider with a population that is poorly known. PHOTOGRAPH BY FEDERICO RIOS, NATIONAL GEOGRAPHIC![]() |
Biologists examine a Colombian lesserblack tarantula, Xenesthis immanis, they found in the forest. PHOTOGRAPH BY FEDERICO RIOS, NATIONAL GEOGRAPHIC![]() |
Juan Camilo Arredondo, a herpetologist on the expedition, examines a tiny frog that he believes is in the family Centrolenidae, but which requires more research. PHOTOGRAPH BY FEDERICO RIOS, NATIONAL GEOGRAPHIC![]() |
A Bothrops punctatus, or spotted lancehead, is a venomous pit viper. PHOTOGRAPH BY FEDERICO RIOS, NATIONAL GEOGRAPHIC![]() |
Scientists caught this cricket in the Tettigoniidae family in the act of molting. PHOTOGRAPH BY FEDERICO RIOS, NATIONAL GEOGRAPHIC![]() |