Continuity mistake: After she throws up, Melanie brings Cathy back out from the bathroom and the scales on the table and the curtains behind them are very well lit. No one turned off any lights, but a few shots later when the birds start the next attack Melanie stands and the scales and curtain are in the dark. (01:40:10)????
Continuity mistake: When we first see the three-branched lamp to the left of Annie's couch one branch is facing the camera and two are behind the lamp. Now, as she sits sipping her brandy the lamp has been reversed with the lone branch in the back facing the wall. It's much easier to see if you look at the branch in the lampshade. (00:41:10 - 00:43:30)????
Continuity mistake: As Mitch holds his binoculars in order to see Melanie, the left strap comes down in the middle of the palm of his hand. We know he hasn't put the binoculars down but in the next shot he's holding them differently with the strap moved over two inches closer to his sweater's sleeve. (00:24:15)????
Continuity mistake: In the first shot of Annie's body lying on the steps there's an orange chair on the porch pushed up under the window on the right. At first the top of the chair is below the bottom sill of the window but in the next shot it's been moved and the top of it is now above the sill. (01:30:20)????