The Crested honey buzzard appears long-necked with a small head resembling that of a pigeon. It has a long tail and a short head crest. It is brown above, but not as dark as the European honey buzzard, and paler below. A dark throat stripe is present. Unusually for a large bird of prey, the sexes can be distinguished. The male has a blue-grey head with a brown iris, while the female's head is brown and the iris is yellow. She is slightly larger and darker than the male. The male has two black bands in the tail and three black underwing bands, while the female has three black tail bands and four narrower black underwing bands. The juvenile has extensive black primary tips with narrower underwing bands. It has a yellow cere at the base of the bill, and a dark iris. The coloration and the tail pattern of the species are highly variable.
Crested honey buzzards spend summer in Siberia and Japan, and winter in tropical Southeast Asia and the Indian subcontinent. Elsewhere, these birds are more or less resident. Crested honey buzzards prefer to live in well-forested lowland and hilly areas that are broken by open glades. In South and Southeast Asia, they are sometimes found in small groves near villages.
