This happens in the scene just before "Melanie Daniels" (Tippi Hedren) goes upstairs & is attacked by the birds (near the end of the movie). She is awakening on the couch, & leans over to try & wake "Mitch Brenner" (Rod Taylor). In the DVD version, she correctly says "Mitch?". But in the VHS version I have, she says "Rod?". Not only that, the voice that speaks is not hers, but Jessica Tandy's, who played "Lydia Brenner", Mitch's mother.