Scientists are trying to save Puerto Rico's endangered Amazon parrots after Hurricane Maria destroyed the birds' habitats and food sources. El Yunque is a large national forest on the eastern part of Puerto Rico. Just two of the 56 wild parrots that once lived there survived Maria. The Category-4 storm struck Puerto Rico in September 2017. Scientists report other forests have seen great drops in parrot populations, as well. In the 1800s, there were more than a million of the bright green parrots living in the wild in Puerto Rico. By the 1970s, the number was down to just 13 birds after years of forest clearing. The U.S. and Puerto Rican governments launched a special program in 1972 to help increase the parrot population. That led to the creation of three breeding centers. Just weeks before Hurricane Maria hit, scientists counted 56 wild parrots at El Yunque.