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Eagle Scout is the highest rank attainable in the Scouts BSA program by the Boy Scouts of America (BSA). Since its inception in 1911, only four percent of Scouts have earned this rank after a lengthy review process. [2] The Eagle Scout rank has been earned by over 2.5 million youth. [3]
The mountain hawk-eagle, Flores hawk-eagle (which is the only hawk-eagle in its small-island range) and Legge's hawk-eagle, in decreasing magnitude of size, are all are larger and bulkier than the changeable hawk-eagle whereas other Nisaetus species are smaller to varying degrees, distinctly so in the Wallace's hawk-eagle and Blyth's hawk-eagle.
This sexual difference in size is most pronounced in active species that hunt birds, such as the Accipiter hawks, in which the size difference averages 25–50%. In a majority of species, such as generalist hunters and rodent -, reptile -, fish -, and insect -hunting specialists, the dimorphism is less, usually between a 5% to 30% size difference.
Despite the differences between the Bonelli's eagle and the African hawk-eagle the two species are visibly similar and are still considered sister species. [ 5 ] [ 8 ] Recent DNA research has resulted in the two species being moved, in 2014, [ 9 ] to the genus Aquila from Hieraaetus , along with a third possibly related species, the Cassin's ...
More surprisingly, the smaller, much paler-bellied species pair Bonelli's eagle (A. fasciatus) and African hawk-eagle (A. spilogaster), previously included in the genus Hieraaetus, have been revealed to be genetically much closer to the Verreaux's and golden eagle lineage than to other species traditionally included in the genus Aquila. [4] [5] [2]
[6] [12] [14] The mountain hawk-eagle attains a total length of 69 to 84 cm (27 to 33 in) and a wingspan of 134 to 175 cm (4 ft 5 in to 5 ft 9 in). Like most birds of prey, females are larger on average than the male, with a typical size difference of 3-8%, though it can rarely range up to a 21% difference.
A Legge's hawk-eagle photographed in Sri Lanka. Legge's hawk-eagle was formerly considered to be a subspecies of the mountain hawk-eagle, but it is smaller and has unstreaked buff underwing coverts. A 2008 study based on the geographic isolation and differences in call suggested that this be treated as a full species, Nisaetus kelaarti. [2]
The Javan hawk-eagle (Nisaetus bartelsi) is a medium-sized, dark brown raptor in the family Accipitridae. It is the national bird of Indonesia , where it is commonly referred to as the real-life model for the Garuda Pancasila , which is also inspired by Garuda ; a bird-like deity in Hinduism and Buddhism .