If there be not six Ravens there be not a crown.
A Raven Queen Vanishes, and Britain Checks a Prophecy
One of the resident birds at the Tower of London is feared to have died. Legend says at least six must be kept there, or the nation will fall.
www.nytimes.com/2021/01/14/world/europe/tower-of-london-missing-raven-merlina.html
