Reference to the Golden Eagle has brought additional interest to The Jhon Collector Mysteries. Mention of personal experience has resulted in, conservatively, a deluge of communications from people wanting to know more.
You ask, I do:
Adult Golden Eagles are dark brown with a golden sheen on the back of the head and neck. For their first several years of life, young birds have neatly defined white patches at the base of the tail and in the wings.