Corrected entry: While saving Ginger, Rocky tells Bunty to "give him a boost", and then he is shown on top of a telephone pole. However, in the beginning, when "Chicken Run" appears, you can tell there is absolutely no way that a chicken could give another one a boost to get to the top of the telephone wire. Rocky couldn't have climbed up it either, because Mr. Tweedy most likely would have noticed this easy way to escape.
Corrected entry: How did Ginger get to the dough in the machine without being sliced up? Rocky grabs hold of a bar, makes it fall down, and slides to that place, but there was no bar before that. (Both he and Ginger fall down the "Meat" chute, Rocky almost falls down the "Vegetable" chute, but it changes right before he gets there).
Corrected entry: There are several points throughout the film where you can see a fence go right through the farm. This is proved by the fact that there are huts on either side of the fence.
Corrected entry: When they are all lined up, Ginger hands Mac the plan for the escape. Mac wrongly reads it and says about going under the fence, then Ginger turns it. Then Mac realises they go over the fence. But Ginger only turned it 90 degrees. If Mac was to read the plan properly, it should have been 180 degrees.
Corrected entry: After take-off, the chickens fly the 'crate' away from the farmhouse, and even just over the Mrs Tweedy's Chicken Pies sign, yet Mrs Tweedy still manages to enter the farm house via the round window in the farmhouse, and this would have only been possible if a number of about turns were made, which we would have noticed during the action with the axe, etc.
Corrected entry: After the pie machine is delivered, Mrs. Tweedy hands the instruction manual to Mr. Tweedy and he says "I'll put it together then, shall I?". Then after the pie machine has been put together Mr. Tweedy asks his wife "What is it?". I find it really far-fetched that after reading an entire instruction manual about the machine and putting it together, he still wouldn't know what it actually was.
Corrected entry: The film takes place in the 1950s, but the song "Flip Flop and Fly" by the Blues Brothers that the chickens play at the dance was not written until 1978.
Corrected entry: The Tweedys are obviously very poor, and are desperate for money. But when Mr. Tweedy asks Mrs. Tweedy which chickens he should get to be made into pies, Mrs. Tweedy replies "All of them". What did Ms. Tweedy plan to do after all of those pies were sold? It makes no sense that she would want to kill all the chickens at once.
Corrected entry: In the beginning, Ginger makes a plan to escape underground. She holds a spoon in her hand, which she is evidently using to escape with. But then she is holding an egg mixer.
Corrected entry: At the beginning of the film, Edwina the chicken is picked up by Mrs Tweedy for not laying any eggs. Edwina is a white chicken. When you see Mrs Tweedy holding up Edwina by the doorway two seconds later, Edwina's colour has changed to brown. Then when there is a close up of the chopping block and the axe, you can see Edwina's bottom half, which has now changed back to white.
Corrected entry: At the end, all the chickens are on a small island in the middle of a lake in a bird sanctuary. But if they landed on that island, where is their plane? It's nowhere to be seen.