The Ravens of the Tower of London are a group of at least six captive ravens which live at the Tower of London. Their presence is traditionally believed to protect the Crown and the tower; a superstition holds that “if the Tower of London ravens are lost or fly away, the Crown will fall and Britain with it”. [source]

Pictured here are Jubilee and Munin. Jubilee was hatched in Somerset in 2012 and wears a gold band. He was given to the Queen on her Diamond Jubilee. Munin was hatched in North Uist in 1995 and wears a light green band. She is the oldest raven at the tower. [source]

Historically, wild ravens were common throughout Britain, even in towns, the tower being within their natural range. When they were exterminated from much of their traditional range, including London, they could only exist at the tower in captivity and with official support. Local legend puts the origin of the captive raven population at the time of King Charles II (reigned 1660–85). [source]