I have smaller flocks displaying the same some years over the fields outside my window, and every Autumn (not as pretty) an Unkindness of Crows, hundreds strong, fly from tree to tree every evening looking to roost.
But my favourite display? 'My' Barn Owls hunting, quartering the field, searching for prey. During nesting season they hunt all afternoon, and in rare years I have watched an adult (female?) training a juvenile.

Dave