About Aviceda jerdoni (Blyth, 1842)
This species reaches approximately 46 centimeters in length. In flight, it can be easily confused with the crested goshawk or the changeable hawk-eagle, but it can be told apart by its longer upright crest, very broad and rounded paddle-shaped wings, and mostly plain, pale underparts. It has a white chin and a distinct bold black mesial stripe. Multiple subspecies are recognized across this species' large distribution range. The recognized subspecies and their ranges are: A. j. jerdoni (Blyth, 1842), found from Sikkim to Assam, Burma, and Sumatra; A. j. ceylonensis (Legge, 1876), found in South India and Sri Lanka; A. j. borneensis (Sharpe, 1893), found in Borneo; A. j. magnirostris (Kaup, 1847), found in Luzon and Mindanao; A. j. leucopias (Sharpe, 1888), found in Romblon, Samar, and Palawan; and A. j. celebensis (Schlegel, 1873). This is a resident species whose range includes the terai of North India, the foothills of the Eastern Himalayas from Eastern Nepal and Bengal duars to the Assam valley, the Western Ghats in Southern India, southern Sri Lanka, Bangladesh, Burma, Thailand, Sumatra, Singapore, and the Philippines.
