Swan Upping is a yearly tradition, where all the swans along the River Thames are rounded up, caught, tagged and then released.
As all swans are the property of the Queen, the task of marking the swans falls to the Queen's Swan Marker. Naturally.
The ceremony lasts over five days, and takes place in the third week of July.
When passing Windsor Castle, all rowers in the party stand to attention in their boats and toast "Her Majesty The Queen, Seigneur of the Swans". Of course.
