The Gavião-real, Harpia or Uiraçu-verdadeiro (Harpy harpyja) is the Harpy eagle. The heaviest and one of the largest birds of prey in the world with a wingspan of 2.5 meters and weight up to 10 kg. Like owls, they have a facial disc of feathers that can focus on smaller waves to improve their listening skills. The Gavião-real has broad wings and round, stubby legs, and fingers are extremely strong, with huge claws, able to raise a sheep from the floor. It has a wingspan of up to 2.5 meters and a weight between 4 and 5.5 kg when male and between 6 and 9 kg when female. The main habitat is the tropical forests and especially in the Amazon, living in tall trees, where they build their nests.