The Fork tailed Drongo is an aggressive and fearless birds, given their small size, and will attack much larger species, including birds of prey if their nest or young are threatened.
Observations show that the Fork-tailed Drongo in Africa are capable of using deceptive mimicked alarm calls to steal food from birds like pied babblers and animals such as meerkats.
Fork-tailed Drongos spend a quarter of their time following other animals. Sometimes when a predator is approaching, drongos act as sentries and warn their neighbours with genuine alarm calls.
But drongos also earn quarter of their daily calories by acting like “The Boy Who Cried Wolf” and sound a false alarm when the other animal finds food. When the meerkats and babblers flee from the non-existent predator, the drongo steals their food.
He will also attack and try to frighten other birds into leaving an area where it is feeding, specially birds that feed on similar foods to it. The Purple Roller is in direct competition for food with the Drongo, so they will try to get them to flee…. in this case unsuccessfully….
The fly passed…
and then the return to perch after an unsuccessful attempt…..