The largest primate of the Americas, the Muriquis, are a critically endangered species. On a private reserve in the state of Minas Gerais, Brazil (RPPN Feliciano Miguel Abdala) an alliance between science and conservation has saved a group of “Muriquis do Norte” – Northern Muriquis – (Brachyteles hypoxanthus) from extinction. There are over 300 individuals, in the 950 hectares of the reserve. Only 30 years ago their population was around 50. But they need ecological corridors to expand farther into other adjacent fragments of the Atlantic Rainforest to become a viable population.