The wire attached to the "flying" bird is clearly visible while the bird just flops around while "flying" at the camera.
The wires moving the spider in Steve's dream sequence are clearly visible.
During the chase when Steve is abducted, one of the crooks leans out of the car and fires nine shots at the cops from a six-shot revolver.
When Steve is shown a newspaper clipping about the robbery, the supposed page is blank on the back.