Director Jon Stone, in the 1994 documentary "The World of Jim Henson", revealed that the Big Bird costume actually did not have any openings that would allow the actor to see; a small television was strapped to the actor's chest to allow him to navigate. The camera was set up for Spinney by technician Walt Rauffer, on the suggestion of director Bob Myhrum. Rauffer rigged the camera to a harness strapped to Spinney's chest; Spinney reported that they called the camera "the electronic bra".