Annual royal swan census under way on River Thames
Swan Upping dates back to the 12th century when the ownership of all unmarked mute swans in open water in Britain was claimed by the Crown.
The annual census of the swan population on the River Thames is under way following a winter that saw some animals killed by bird flu.
David Barber, the Queen’s Swan Marker, led his team as they carried out their count of new cygnets known as Swan Upping.
The monarch, who technically owns all unmarked mute swans in open water in Britain, was kept informed about the development at the time.
The ceremony dates back to the 12th century when the ownership of all unmarked mute swans in open water in Britain was claimed by the Crown in order to ensure a ready supply for feasts.
The ownership is shared with the Worshipful Company of Vintners and the Worshipful Company of Dyers, who were granted rights of ownership by the Crown in the 15th century.
Cygnets whose parents are Dyers or Vintners’s birds are themselves ringed, while all others are left unmarked to denote they belong to the Queen.