In another story, the drongo is working for a farmer when the boss decides it is time to build another windmill. The drongo agrees to help but asks the farmer if he thinks it really makes sense to have two windmills. ‘What do you mean?’ the farmer asked. ‘Well, says the drongo, ‘there′s barely enough wind to operate the one you already have, so I doubt there′ll be enough to work two of them.’
Source: wiktionary