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steppe eagle
The steppe eagle (''Aquila nipalensis'') is a bird of prey. Like all eagles, it belongs to the family Accipitridae.〔 It was once considered to be closely related to the non-migratory tawny eagle (''Aquila rapax'') and the two forms have previously been treated as conspecific. They were split based on pronounced differences in morphology and anatomy;〔〔〔 two molecular studies, each based on a very small number of genes, indicate that the species are distinct but disagree over how closely related they are.〔
==Description==
It is about in length and has a wingspan of . Females, weighing , are slightly larger than males, at . This is a large eagle with brown upperparts and blackish flight feathers and tail. This species is larger and darker than the tawny eagle, and it has a pale throat which is lacking in that species. Immature birds are less contrasted than adults, but both show a range of variation in plumage colour. The eastern subspecies ''A. n. nipalensis'' is larger and darker than the European and Central Asian ''A. n. orientalis''.
The call of the steppe eagle sounds like a crow barking, but it is rather a silent bird.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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