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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.
The mountain hawk-eagle (Nisaetus nipalensis) or Hodgson's hawk-eagle, is a large bird of prey native to Asia. The latter name is in reference to the naturalist, Brian Houghton Hodgson, who described the species after collecting one himself in the Himalayas. [4] A less widely recognized common English name is the feather-toed eagle. [5]
Many well-known birds such as hawks, eagles, kites, harriers and Old World vultures are included in this group. The osprey is usually placed in a separate family ( Pandionidae ), as is the secretary bird ( Sagittariidae ), and the New World vultures are also usually now regarded as a separate family or order.
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 .
Clockwise from top left: Bald eagle (Haliaeetus leucocephalus), cinereous harrier (Circus cinereus), greater spotted eagle (Clanga clanga), harpy eagle (Harpia harpyja), secretarybird (Sagittarius serpentarius), osprey (Pandion haliaetus), slate-colored hawk (Buteogallus schistaceus), Galapagos hawk (Buteo galapagoensis), white-backed vulture (Gyps africanus) (center).
Members of the "Buteogallus group" are also called hawks, with the exception of solitary eagle species. Buteo is the type genus of the subfamily Buteoninae. This subfamily traditionally includes eagles and sea-eagles, but Lerner and Mindell (2005) [8] proposed placing them into separate the subfamilies Aquilinae and Haliaaetinae. This would ...
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 genus Hieraaetus, sometimes known as small eagles or hawk-eagles, denotes a group of smallish eagles usually placed in the accipitrid subfamilies Buteoninae [1] or Aquilinae. [ 2 ] They are generally medium-sized birds of prey inhabiting Europe, Asia, Africa, New Guinea and Australia.