Did you know the Tower of London is home to not only the Beef Eaters but also six ravens that are said to bring good luck to the monarchy? Well, technically there are seven right now, but that's only because there are supposed to be six in place at all times so this way they have a spare. So what happens when the ravens are gone?
One of the most difficult times for the Monarchy was just after World War II. The raven population was down to just one -- a raven named Grip. Most of the birds apparently flew the coop, it is believed, due to the disruption of the Blitz as the Germans bombed London relentlessly. It is rumored that one of the ravens was kidnapped. It seemed that perhaps the legend of the ravens could be true.
Sure it's probably just coincidence, but when a good luck charm works out for around 700 years, you tend to not want to test how effective it is.