Continuity mistake: As the birds gather on the monkey bars behind Melanie she looks to her right and straight up and sees one lone bird flying past a television antenna. This is incorrect because first of all she's looking up to high and second we've seen in that direction and there is no house there, just a hill. The house is across the street. (01:11:10 - 01:33:05)????
Continuity mistake: As Melanie walks around with her flashlight she goes into the kitchen and looks at the lovebirds. This cage has 11 rungs on the side and is not the same one that she walked into the house with when she brought the lovebirds up from San Francisco, which had 19 rungs. (01:46:15)????
Continuity mistake: As Melanie is inside of the phone booth a man with birds attacking him runs up to her and there is a clear shot of the road extending past the restaurant. When this spot is seen earlier as Mitch and Melanie walk into the restaurant it's entirely different with a bunch of telephone poles on the left. (01:27:25)????
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)????
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)????