An AIRMAN is a military personnel who operates aircraft, and an AVIATOR is a person who flies an aircraft. Robert Stroud was an American ornithologist, author, and federal prisoner who became known as the 'Birdman of Alcatraz' due to his extensive study of birds while incarcerated. In Greek mythology, Icarus was the son of Daedalus who flew too close to the sun with wings made of feathers and wax, and fell into the sea when the wax melted. The term 'birdman' can be used to refer to any of these individuals, as they all have a connection to birds in some way.