Ancient Aliens
S21E11 The Birdman Mystery
Across various ancient civilizations, illustrations of enigmatic beings that combine human and avian traits can be found. These figures are often honored as celestial entities with extraordinary powers. But did these "Birdmen" actually walk the earth? And what might their true nature be?
Season 21 Episodes
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The Top Ten Extraordinary Discoveries
The Top Ten Mysterious Monoliths
The Top Ten UFO Crashes
The Top Ten Unexplained Technologies
The Top Ten Secret Projects
The Top Ten Mysterious Mountains
Mysteries of the Aztecs
The Glowing Orb Phenomenon
The Legacy of J. Allen Hynek
The Volcano Factor
The Birdman Mystery
The Abduction Files
The Giants
Aliens In Our Midst
Britain's UFO Files
Mysteries Of The Norse Gods
Secrets of Japan