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The changeable hawk-eagle (Nisaetus cirrhatus) or crested hawk-eagle is a large bird of prey species of the family Accipitridae. More informal or antiquated English common names include the marsh hawk-eagle or Indian crested hawk-eagle. It is a member of the subfamily Aquilinae, with signature feathers, absent in tropical raptors from outside this subfamily, covering the tarsus. It was formerly placed in the genus Spizaetus, but studies pointed to the group being paraphyletic resulting in the Old World members being placed in Nisaetus and separated from the New World species. It is a typical "hawk-eagle" in that it is an agile forest-dwelling predator and like many such eagles readily…
Text adapted from Wikipedia, licensed CC BY-SA 4.0.
ID tip
The changeable hawk-eagle is a largish but slender eagle. They fall near the middle of sizes among the currently accepted species in the genus Nisaetus. As in most birds of prey, females are larger than males with an average overall size difference of 7% but this can individually range to an 18-22% difference, with island races apparently thought to be less dimorphic on average. Voice: The changeable hawk-eagle is often largely silent but in breeding season it may readily call, both from their perch or on the wing. Like many diurnal raptors, their calls are a form of high-pitched scream.
Text from Wikipedia, licensed CC BY-SA 4.0.
What the Changeable Hawk-Eagle sounds like
Where it lives
When to see it
Peak activity in February · a resident species across most of its range
Easily confused with
Mountain Hawk-EagleNisaetus nipalensisVoice: Mountain hawk-eagles are silent apart from their breeding season.
Wallace's Hawk-EagleNisaetus nanusWallace's hawk-eagle is a species of bird of prey in the family Accipitridae.
Blyth's Hawk-EagleNisaetus albonigerBlyth's hawk-eagle is a medium-sized bird of prey.
Learn the Changeable Hawk-Eagle for real
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