According to The Telegraph:
Swan Upping, the annual census of the swan population on the River Thames, commenced today in Sunbury, Surrey.
The ceremony of Swan Upping dates from the twelfth century and takes place during the third week of July every year.
By tradition scarlet uniforms are worn by the Queen’s Swan Marker and Swan Uppers and each boat flies the appropriate flag and pennant.
The five-day survey will also pass through Oxfordshire and Buckinghamshire.
To view the picture gallery in The Telegraph, please click here.
