Common Buzzard

When I hear the call of the Common Buzzard it has quite a haunting effect. I find there to be something just a little eerie about it. When the juveniles start calling they seem to do so constantly for minutes on end. I am not sure if this one below is a juvenile but it was calling for quite a considerable time whilst sat on a post. It then took to the air still calling. It had something on it's mind, maybe it was breakfast.