Continuity mistake: At the end of the bird attack Melanie gets Lydia and Cathy out through the side door. If you look to the left of the screen the wall behind and around the lamp where the painting hangs is dark. In the last shot of the birds flying around the painting is lit.
Continuity mistake: As Annie goes across the room to get an ashtray, you can see that the next room is pitch black. In a previous shot when she went to get the brandy it was lit up and she never touched a light switch.
Continuity mistake: When Annie gets up and says, " I think I'll have some of that" her cigarette is half gone with a long ash on it. In the next shot as she fiddles with the brandy bottle her cigarette is brand new.
Visible crew/equipment: As the birds fly around the house there's a close-up of Melanie holding Cathy with Lydia in the background. If you look closely near the picture on the left wall you can see the shadow of the wires holding up some of the birds.
Continuity mistake: There are two red books on the living room table next to Mitch's napkin. No one goes near them but later in this scene when everyone has left and the birds are flying around Mitch's dinner plate is there but the red books are not.
Continuity mistake: As Lydia calls Fred Brinkmeyer about the chickens, notice the lamp and candle to the left of the phone. When Mitch uses this lamp later to tie the shutter closed it and the candlestick holder next to it are moved 90 degrees so that they are facing against the wall.
Continuity mistake: When Mitch takes Melanie to try to get help after she is hit by the gull the first door they come upon says, "out to lunch". If you look closely as they walk up to the door they're in bright sunlight but in the next shot as they get to the door it's overcast.
Continuity mistake: The store manager has a pencil in his chest pocket when he finishes speaking to Melanie outside the store. Even though he never touches it it's shorter as he talks on the phone to the boat keeper.
Continuity mistake: When Melanie Says, "There we are, love birds" there are no shadows on the edge of the cage near her face. The next time we see this spot the lighting has been changed so that you can see the shadow on the edge of the cage.