The scene with the vultures over the mule is signficant because
they represent the circle of life, showing the reader how the mule's death will benefit other creatures.
the call and response part of the scene mirrors the religious imagery often present in the town gatherings.
it shows an example of magical realism, a prevalent theme within the novel and in the context of other novels of the time period.
the vultures symbolize the townspeople and make a mockery of them in much the same way as the townspeople made a mockery of the mule.
the vultures can now become part of the town folklore and take the place of the mule as the center of their tall tales.