Continuity: When Tippi Hedren is having her head wound cleaned in the restaurant, Rod Taylor is wiping her blood off with a tissue but it does not actually come off; in the next shot, however, there is clearly no blood on her head.

Continuity: After Melanie has been bandaged up after her attack, she sits up on the sofa, and you can see two large bloody scratches on her left cheek. These scratches disappear when Mitch and Lydia walk Melanie outside to the car.

Continuity: When Lydia brings out Cathy's birthday cake, in a wide shot the icing is white, then in a closeup the icing is a pink colour.

Revealing: The birds that attack the schoolchildren have no shadows.

Visible crew/equipment: In a scene where Melanie, Mitch and Cathy are walking to the building on the hill along side Melanie's car, you can see the camera move in the reflection on the side of the car.

Continuity: The tall structure on the hill behind the swing set has a lot of clouds around it. When we see it seconds later the sky is clear.

Continuity: Early in the movie Melanie makes a right turn as she goes up to Annie's house and we see a white post on the school side of the street and a stop sign on the opposite side. Now as she drives up to the school to check on Cathy we see the exact same spot and there's no stop sign.

Continuity: Before Lydia walks into Mr. Faucet's room she looks to her left and her face is entirely illuminated by the light coming from his room. In the next shot as she walks in only the left side of her face is illuminated.

Continuity: As Melanie opens the door to the bedroom there is no light except her flashlight but you can see two distinct reflections in the door knob, one of the flashlight and one of the studio light behind her.

Continuity: Melanie walks out from behind the desk and goes into the hallway to get the nightgown to show Annie. No one ever flicked a light switch, but the hallway is now very well lit up.

Audio problem: When Annie says, "Did you drive up from San Francisco by the coast road?" her lips are mouthing something different.

Continuity: As Annie opens the door and finds the dead bird on the floor, the background across the street changes from of a very dark house with two lights on to a moonlit road between shots.

Continuity: As Mitch walks up to the garage door all the birds on the ground that are near him run away and there's nothing to his right except a garbage pail. Then just before he walks through the door two birds appear pecking at his feet.

Continuity: When Melanie gets up and looks at the birds massed on the monkey bars the area behind her is a tree and a field. This background changes entirely when she and Mitch walk up to find Annie's body and there is what looks like a junk yard with a valley behind it.

Continuity: The blonde girl in the red with the red bows in her hair has a crow on her head that suddenly jumps to her right shoulder between shots.

Continuity: After finding Mr. Faucet's body, Lydia gets back in her truck through the passenger side door. Notice that the window is rolled up and the side vent window is shut tight. Seconds later we see her inside the truck with the window rolled down and the vent window tilted open.

Continuity: As Melanie and Mitch walk up the hill behind his house Bodega Bay is at very low tide with a lot of sand bars showing. When they get to the top of the hill it's high tide.

Continuity: As they all run into the house to get away from the birds the redheaded boy in the grey-blue suit disappears. He runs across the lawn at the same time as Annie and the two little girls with her and should arrive at exactly the same time but we never see him again. Mitch even looks around in his direction to see if there are any children still outside before he enters the house. The boy just disappears from this scene and is not in the last shot of everyone inside the house either.

Continuity: As Melanie drives up the main street of Bodega Bay a kid on a bike appears riding behind her between shots. He wasn't there in the previous shot when they show her behind the steering wheel and we can see back behind her car.

Continuity: As the school children are running down the hill a white fence appears between shots in the background on the right of the screen.