I later learned that they are called Red Kites. It is amazing to me that just 15 kilometres from the edge of London, there are these huge birds. I never saw a Red Kite inside London, they live in the hills that are near London and other hilly places in Britain.
They do what eagles do in America, they hunt smaller birds and small rodents. They also sound like Eagles, make to sustained shriek sound and glide on the thermal plumes and look for food. I saw one land on the road once, it looked huge, it's body was as tall as my torso and with wings as long as a person.
