The Changeable Hawk-Eagle, scientifically known as Nisaetus cirrhatus, is a large bird of prey belonging to the family Accipitridae. This raptor is characterized by its slender build and a notable crest of feathers that can vary in presence and size among individuals. The species exhibits a wide range of plumage variation, from pale to dark, which changes with age and moult, hence the name "changeable."
Adult Changeable Hawk-Eagles are typically dark brown above with bold streaking below. They possess a strong bill and a crest that can be prominent or nearly absent. Their wings are relatively short, and their tail is long and thinly barred. Juveniles are generally darker with more conspicuous white edges on the mantle and wings. The eyes of adults are yellow to orange-yellow, while juveniles have grey-brown to pale greenish eyes.
This species is found in a variety of habitats, including savannah woodland, forest villages, and even suburban areas. They are also present in open or less dense parts of evergreen or deciduous forests, as well as second growth and wetlands.
