At one point, we thought we had lost the pava aliblanca. The existence of this slender black bird with large white flight feathers was first documented in 1877. But after several research expeditions with no sightings, the scientific community declared the bird extinct. Miraculously, after almost a century of “extinction,” the pava aliblanca was rediscovered in Lambayeque, Peru. Since 1977, conservation experts have made keeping the bird extant a priority. But it's no easy feat. The pava aliblanca is critically endangered, with just 250 known specimens in existence.