US artist Duke Riley created Fly By Night to “pay beautiful homage to some of the First World War’s unsung heroes: the military pigeons that played crucial roles delivering messages between distant personnel.”

Displaying over the River Thames for three days in June, the epic outdoor work saw over 1500 LED-lit pigeons soar into the skies in a “glorious spectacle of unprecedented scale and beauty”.

Click on the image to watch a video clip from MSN.