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Nisaetus, the crested hawk-eagles, is a genus of raptor in the subfamily Aquilinae, found mainly in tropical Asia.They were earlier placed within the genus Spizaetus but molecular studies show that the Old World representatives of that genus are closer to the genus Ictinaetus than to the New World Spizaetus (in the stricter sense).
Only two species of the genus Nisaetus are outside the changeable hawk-eagle's normal distribution (including their own former subspecies, the Flores hawk-eagle). [1] In range with most other Nisaetus species (such as the islands or mainland of southeast Asia), the changeable hawk-eagle is more likely to be almost crestless. Other species tend ...
The Flores hawk-eagle (Nisaetus floris) is a large raptor in the family Accipitridae.It is an endemic species to the Lesser Sunda Islands in Indonesia. [2] A member of the genus Nisaetus, it was considered as a subspecies of and conspecific with the changeable hawk-eagle but genetic studies have evidenced it as a legitimate species. [3]
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An estimated 1.8 kg (4.0 lb) kit of a Japanese badger (Meles anakuma) was preyed upon by a female. Meanwhile, four adult Chinese ferret-badgers (Melogale moschata), weighing on average about 1.3 kg (2.9 lb), were taken in Taiwan, while a Japanese marten (Martes melampus) of the same estimated weight was taken there by a female hawk-eagle.
Blyth's hawk-eagle (Nisaetus alboniger) (earlier treated as Spizaetus) [2] is a medium-sized bird of prey. Like all eagles, it is in the family Accipitridae. It can be found in the Malay Peninsula, Singapore, Sumatra and Borneo. [3] It is a bird of open woodland, although island forms prefer a higher tree density.
The Sulawesi hawk-eagle (Nisaetus lanceolatus) (earlier placed under Spizaetus [1]), also known as Celebes hawk-eagle, is a medium-sized, approximately 64 cm (25 in) long, crestless brown raptor in the family Accipitridae. The adults have rufous-brown, boldly marked head and chest feathers, dark brown wings and black-barred white below.
The Philippine hawk-eagle or north Philippine hawk-eagle (Nisaetus philippensis), earlier treated under Spizaetus, [2] is a species of bird of prey in the family Accipitridae. Many taxonomists consider the Pinsker's hawk-eagle, a former subspecies, raised to full species status. [3] [4] [5] It is endemic to the Philippines.