Revealing mistake: During the fainting scene number of the extras can be seen waving and looking at the camera.
Bye Bye Birdie (1963)
1 revealing mistake - chronological order
Directed by: George Sidney
Starring: Ann-Margret, Janet Leigh, Maureen Stapleton, Dick Van Dyke
Factual error: After Albert feeds the pill to the turtle, you see a close up of its eyes, which are blue. Turtles only have either brown or red eyes, not blue.
Rose DeLeon: Well we could sure use the money. Any day now we'll have another mouth to feed.
Ed Sullivan: Rosie, you're not even married.
Rose DeLeon: His mother.
Trivia: Maureen Stapleton plays Dick Van Dyke's mother in the movie, even though in real life she's only six months older than him.