Brain fever bird (Common Hawk-Cuckoo)

The Brain-fever Bird can be found throughout India, Pakistan and Sri Lanka. They eat insects and are especially well adapted to taking those caterpillars that are so hairy they hurt your hand. They are called Hawk Cuckoo because they are excellent mimics of Shikra, a sparrow hawk species. They even mimic their flight and the way the raptor lands on a perch. It's all so convincing that many birds and squirrels raise the 'bird of prey alarm' when a harmless Common Hawk-cuckoo comes into view. They are Brood parasites.