Just 15 miles from Spain's bustling capital city of Madrid, nestled in a lush public forest, is the GREFA animal hospital, the first stop for the country's injured, ill, or orphaned wildlife. Known as the Group of Rehabilitation of the Native Fauna and its Habitat, this non-governmental nonprofit is dedicated to studying and conserving Spain's native animal species. A veterinarian weighs an orphaned duckling at its arrival to GREFA hospital on March 16, 2017, in Majadahonda, near Madrid, Spain.