CBSE Class 9 Answered

Peacocks are long adapted to be ground birds that feed mainly on the ground and many can effectively escape from danger on foot.  They are also often primarily forest birds and since they are largely active on ground, flying is not always an effective way to escape from danger.  Therefore, they are generally evolved to have shorter and rounder wings, which are less powerful in flight.  They are also often much larger and heavier than other birds which made it tough for them to fly fast as well.