In this Nov. 6, 2018 photo, Puerto Rican parrots huddle in a flight cage at the Iguaca Aviary in El Yunque, Puerto Rico, where the U.S. Fish & Wildlife Service runs a parrot recovery program in collaboration with the Forest Service and the Department of Natural and Environmental Resources. Biologists are trying to save the last of the endangered Puerto Rican parrots after more than half the population of birds disappeared when Hurricane Maria hit Puerto Rico and destroyed their habitat and food sources. (AP Photo/Carlos Giusti), APTOPIX