eagles facts Selected as the most interesting among birds related questions in Birds quiz The double-headed eagle serves as the Russian coat-of-arms. Where did it come from?It was taken over from the Byzantine Empire. After the fall of Constantinople in 1453, Moscow claimed succession to the legacy of the Eastern Roman Empire. Ivan III married Sophia Palaiologina, the niece of the last Byzantine emperor Constantine XI, and made the Byzantine double-headed eagle his own, and eventually Russian, coat-of-arms. In Byzantine heraldry, the heads represent the Emperor having authority over both secular and religious matters.Created by: stigByzantine Empire facts » What is the largest and most powerful raptor found in the Americas?Harpy eagle. Female harpy eagles typically weigh 6 to 9 kg (13 to 20 lb). An exceptionally large captive female, "Jezebel", weighed 12.3 kg (27 lb). The bald eagle, the national bird of the United States of America, weighs up to 6.3 kg (13.9 lb).Created by: Sumit Tamangbirds of prey facts » What do harpy eagles mainly eat?Sloths. Research conducted in a nesting site in Brazil concluded that the harpy's prey basis was composed in 79% by sloths. In a similar research venture in Panama, 53% of captures were sloths.Created by: José Álvarezanimals of South America facts » Where do harpy eagles live?In Central and South America. The harpy eagle is found from south Mexico to north Argentina, most commonly in Brazil. It is rare throughout its range and difficult to see, as it inhabits the canopy of rainforest.Created by: Vijaypredators facts » What animal is that?Harpy eagle. The harpy eagle was first described by Linnaeus in 1758 as Vultur harpyja, after the harpies of Ancient Greek mythology. These were wind spirits that took the dead to Hades, and were said to have a body like an eagle and the face of a human.Created by: globalquiz.orgbirds facts » Play birds quiz and see all the questions.