Eagle is the common name for certain large birds of prey within the family of the Accipitridae. While on a genetic level, only the subfamily Aquilinae comprises "true eagles", many other species are commonly referred to as eagles, such as the bald eagle, and the term generally carries no taxonomic weight. Most of the 68 species of eagles are from Eurasia and Africa.[1] Outside this area, just 14 species can be found—two in North America, nine in Central and South America, and three in Australia. Eagles are not a natural group but denote essentially any kind of bird of prey large enough to hunt sizeable (about 50 cm long or more overall) vertebrates.