The drongos are a family, Dicruridae, of passerine birds of the Old World tropics.
I often find the best way to photograph them is when they are eating....
This is the hair crested drongo.
I have also heard the the word drongo used as a mild form of insult meaning "idiot", and is in particular use by Australians. This may be due to the strange chattering and cackling of this bird, but I have also heard that drongo derives from an Australian racehorse of the same name (apparently after the spangled drongo, Dicrurus bracteatus) in the 1920s that never won despite many places.