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Reptiles and amphibians are hunted by almost all variety of acciptrids when the opportunity arises and may be favored over other prey by some eagles, i.e. Spizaetus hawk-eagles and the "eagles" in Buteogallus, and several species of buteonine hawks found in the tropics.
Immature birds have pale edges on the upper wing coverts and some brownish-grey feathers on the back. [3] The black-and-white hawk-eagle is hard to confuse with any other bird in its range with the exception of juvenile Grey-headed Kites. These birds are known to mimic several species of hawk-eagles. [4]
The Accipitriformes (/ æ k ˌ s ɪ p ɪ t r ɪ ˈ f ɔːr m iː z /; from Latin accipiter 'hawk' and formes 'having the form of') are an order of birds that includes most of the diurnal birds of prey, including hawks, eagles, vultures, and kites, but not falcons.
The fish eagles, booted eagles, and harpy eagles have traditionally been placed in the subfamily Buteoninae together with the buzzard-hawks (buteonine hawks) and harriers. Some authors may treat these groups as tribes of the Buteoninae; Lerner & Mindell [ 26 ] proposed separating the eagle groups into their own subfamilies of Accipitridae .
However, the larger eagles (both more than twice as heavy than the hawk-eagle) primarily took hyraxes taken that were usually rather bigger than those taken by hawk-eagle, normally being at least 2,000 to 3,000 g (4.4 to 6.6 lb) for the crowned and the Verreaux's while that was the very largest sizes hunted by the hawk-eagles.
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.
Since then, the species has soared to recovery; as of 2020, there were 316,700 bald eagles in the US, although over 40 bald eagles succumbed to bird flu in 2022.
The ornate hawk-eagle is a member of the booted eagle subfamily, with the signature well-feathered tarsus present on both tropical and temperate species (and shared, presumably through convergent evolution, with a pair of buteonine hawks). [4] [6] It is one of four living members of the Spizaetus species of "hawk-eagle" native to the neotropics.