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Continuity mistake: Just before the lights blowout Mitch comes back into living room and there is a red ottoman to the right of the green chair that Lydia and Cathy are sitting in. A few moments before, all three of them just walked through that spot when they were hiding by the bookcase and it wasn't there. (01:44:05)

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Continuity mistake: As the birds start flying around the room Lydia gets up and the green pillow behind her is on the left and the red pillow is on the right. When Mitch overturns the table the red is on the left and the green on the right. (00:54:50)

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Continuity mistake: Walking up the hill both sides of Melanie's collar are turned up by the wind. In the next shot at the top of the hill her collar is turned down. (00:48:10)

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Continuity mistake: In her room Melanie walks past a mirror that shows a reflection of the blanket on her bed. After she looks out the window at the pick-up truck she walks back and the lighting on the bed is turned off and the reflection is now dark. But if you look closely it's not dark enough to tell the bed has now been made up. (00:58:20)

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Continuity mistake: When Melanie looks out the window to see the gas station attendant attacked by the birds the coat hanger that was there earlier in the scene, next to the window, is gone. (01:24:30)

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Continuity mistake: As Melanie pulls up to Mitch's dock a piece of rope tied to the post extends above the middle of the yellow buoy. In the next shot it's not there. (00:21:35)

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Continuity mistake: As Mitch starts to run out of the restaurant the angle of the drapes to the left of the old drunk at the bar changes between shots. At first it's spread out more at the bottom, then up close it hangs straight down. (01:24:40)

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Continuity mistake: As Melanie and Annie talk about Lydia, Melanie never stops holding her drink with both hands but her necklace gets higher on her neck between shots. (00:43:55)

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Continuity mistake: In a close-up of her driving to Bodega Bay Melanie turns the steering wheel to the left and we hear the screeching of her wheels, but the background indicates she's still going straight. (00:11:05)

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Continuity mistake: As Melanie parks in front of the school there's a big hunk of black tar on the rear quarter panel of her car behind the tire, that wasn't there in the previous shot. (01:08:15)

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Continuity mistake: As Melanie runs into the phone booth from the restaurant the four poles that were around it when Mitch walks her to the restaurant after the gull attack have disappeared. (01:26:10)

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Continuity mistake: As Melanie returns to Annie's house the sun is shining brightly overhead and not casting any shadows onto the front door. In the next shot as she rings the doorbell there are two distinct shadows of her on the house, one to her left and one to her right. (00:31:05)

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Continuity mistake: There are two different perspectives when Mitch puts the peroxide on Melanie's cut. The first is the close-up of her face and there's no blood on the piece of cotton. The second is the close-up of him and in these shots there's plenty of blood on the cotton, and they keep switching between the shots. (00:27:35)

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Continuity mistake: As Melanie talks to Mitch the stack of magazines on the desk are straightened up and moved to the right between shots. When we first see them as Annie sits behind the desk smoking her cigarette they're not stacked evenly. (00:45:45)

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Continuity mistake: As she attempts to get the bird out of the cage for Mitch, Melanie places the pencil over her ear and a lock of her hair drapes over it. Then when she says to Mitch, "What did you say?" the pencil is now pushed into her hair but she never went near it. (00:05:45 - 00:06:25)

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Continuity mistake: After Mitch ties the shutter closed both sides of the window look identical with each shudder being seen through the window, but as he walks back into the living room just before the lights go out the left shutter is the same and the right shutter is black. (01:44:05)

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Continuity mistake: As Lydia looks through the window of Mr. Faucet's kitchen there is a distinct pattern on the wall to her left. As she comes through the door the pattern on the wall is different and she's in a different room. (00:59:35)

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Continuity mistake: The lamp over the dining room table, when Melanie brings Cathy back from the bathroom, is not this same lamp that was there as they were listening to the television report. Before it had a glass bottom and now the entire bottom is made of metal. (01:40:15)

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Continuity mistake: As Mitch checks the doors and windows Melanie sits with Cathy on the couch. Notice the fruit bowl under the lamp. At the beginning of the attack the red apple jumps to the front of the bowl from the back without anyone being near it. (01:36:50)

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Continuity mistake: When we first see Annie's house shrubs are growing right up to the edge of the right and the left side of her fence. Then when she is lying there dead the shrubs on the left side of the fence are different. (01:30:30)

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