The hair-crested drongo (Dicrurus hottentottus) is an Asian bird of the family Dicruridae. This species was formerly considered conspecific with Dicrurus bracteatus, for which the name “spangled drongo” – formerly used for both – is now usually reserved. Some authorities include the Sumatran drongo (D. sumatranus) in D. hottentottus as subspecies (Lepage 2003).
It is native from India and Bhutan through Indochina to China, Indonesia, and Brunei (BirdLife International 2008). Hair-crested drongos move in small flocks and are very noisy. The “spangled drongo,” Dicrurus bracteatus is native on the east coast of Australia and its name is pejorative slang for a silly person. This may be due to its strange chattering and cackling. _”Complete Book of Australian Birds” Reader’s Digest.1977. source