About Nisaetus alboniger Blyth, 1845
Blyth's hawk-eagle, scientifically named Nisaetus alboniger, was previously classified under the genus Spizaetus. It is a medium-sized bird of prey that belongs to the Accipitridae family, the same family that includes all other eagles. This species occurs in the Malay Peninsula, Singapore, Sumatra, and Borneo. It typically inhabits open woodland, though populations living on islands prefer areas with higher tree density. The species builds a stick nest in a tree and lays a single egg per clutch. As an eagle, it is fairly small, measuring approximately 50 to 60 cm (20 to 24 in) in total length. Adult Blyth's hawk-eagles have a thick white band on both the uppertail and undertail, entirely black upperparts, a black-spotted breast, and barred lower underparts. They also have a prominent crest, similar to the crests seen on bazas. Juvenile individuals are dark brown on the upperparts, with a light brown head and underparts. The common name of this species commemorates Edward Blyth (1810–1873), an English zoologist who served as Curator of the Museum of the Asiatic Society of Bengal.
