 It is a day of fluttering and flight regardless, where pennants of brightly dyed silk plume forth from every window, and delicate drones of copper wire and feather glass, made for this day and flown on no other, waft and buzz on the wind. Even the monorail cars trail stylized flamingo feathers from their rooftops, although these are made of feather glass too, since real flamingos do not fly at the speed of sound.