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From Wikipedia: The Blyth's Hawk-Eagle (Nisaetus alboniger) (earlier treated as Spizaetus) is a medium-sized bird of prey. Like all eagles, it is in the family Accipitridae. It breeds in Peninsula Malaysia, Singapore, Sumatra, Borneo. It is a bird of open woodland, although island forms prefer a higher tree density. It builds a stick nest in a tree and lays a single egg. It is a fairly small eagle at about 51–58 cm in length. Adult has a thick white band on uppertail and undertail, all black above, black spotted breast, barred below. It has a prominent crest like the bazas. Juvenile is dark brown above, and has a light brown head and underparts. The common name commemorates Edward Blyth (1810–1873), English zoologist and Curator of the Museum of the Asiatic Society of Bengal.
Seen in the foothills behind the village of Lempur, on the edge of the Kerinci Seblat National Park, Sumatra, Indonesia.
I'm not 100% sure on the ID, especially since I never saw a crest. But I'm not sure what else it could be.