The Hunger Games: Mockingjay book to film differences

The following are noted differences between the original Mockingjay book and The Hunger Games: Mockingjay - Part 1 and The Hunger Games: Mockingjay - Part 2 films. As the novel's author Suzanne Collins was also one of the screenwriters as well as one of the film's producers, it should be inferred that all changes were approved by her. This page contains spoilers from both.

Please note: Try to organize changes by section and present them in close to chronological order.

There are generally a lot of differences that stem from the fact that in the book only things Katniss sees or knows about are ever told. Scenes like the ones where President Snow prepares his speech about the rebels or where he orders the bombing of the hospital thus are never in the book because Katniss cannot know about them.
 * The extreme discipline of District 13 is toned down in the movie, for example the extremely strict food rations that are calculated to be just enough for a person's respective daily work schedule are omitted.
 * Katniss' list of demands for becoming the Mockingjay is shortened in the movie. In the book she also demands to be allowed to go hunting with Gale. While she does go hunting with Gale in the movie, it happens simply as a result of him requesting it, not as a result of her demands.
 * Katniss' chained-up-in-the-dungeon prep team is missing from the film completely, instead replaced by only Effie Trinket who is not a prisoner. In the book, Effie's whereabouts are unknown until the very end, where she appears as part of the team that preps Katniss for what was supposed to be the public execution of President Snow.
 * Castor and Pollux are supposed to be identical twins, but in the movie, they appear to be fraternal twins instead.
 * After Peeta warns that District 13 will be bombed on the broadcast, Peeta is knocked out and the broadcast cuts off almost immediately in the movie, whereas in the book this scene goes on longer, with the camera being knocked over and Peeta's blood splattering on the floor.
 * In the book, Peeta reveals in the interview that Chaff was killed by Brutus, and he killed Brutus. In the film he does not mention them.
 * Upon leaving the bunker after the bombing, Katniss is greeted by two dozen roses in the book. In the movie, there is a whole carpet of them.
 * In the movie only Katniss has a breakdown after the flower incident, in the book Finnick has one as well.
 * In the book, Pollux uses a twig to write the word "SING?" in the dirt, asking Katniss to sing. In the movie, he instead taps his lips and points to Katniss, prompting her to sing.
 * The whole rescue mission for Peeta and the other victors is majorly modified from the book in the film. In the book, the whole mission is performed off-screen. There is no communication at all with the rescue team in the book. In the movie, the whole event is on a video-feed. The broadcast that is supposed to act as a distraction is not live but recorded in the book, and Katniss also has a (though short) part in it. The videochat between Snow and Katniss during the rescue mission does not take place in the book.
 * Enobaria is not part of the Mockingjay deal Katniss makes with President Coin, not rescued from the Tribute Center, and not even mentioned in the movie at all. She is seen in Part 2 as part of the surviving victors who Coin asks about making a special Hunger Games with Capitol children.
 * In the book, Beetee explains Katniss that he can walk, but it is easier for him to use a wheelchair because he gets tired quickly. In the film he does not say it, leaving the impression that he is paraplegic as a result of the injuries he sustained at the arena.
 * In the book after Peeta is knocked out, the doctors bring in Delly to help him. Part 1 has Katniss watching as Peeta struggles to get out of his restraints. Part 2 has Prim talking with Peeta instead of Delly.
 * In the book, Leeg 1 is killed by a lizard mutt and Leeg 2 is shot in the head by a metal dart. In the movie, 2 injures her leg and stays behind in an abandoned building with 1 tending for her. The building is subsequently destroyed by Peacekeepers after an intense firefight ending with the Peacekeepers firing rockets into the building, killing them both.
 * The movie has the Capitol frequently broadcasting reports on the ongoing battle caused by the rebel invasion. Once Snow does a speech dismissing the supposedly dead Katniss, the signal is hijacked by a transmission by Coin.
 * In the book, Katniss only has one arrow in her quiver which Gale gives her, to represent the last shot of the war, which she uses to kill Coin. In the film, Katniss has 6 arrows in her quiver.
 * In the book, after Katniss kills Coin, Snow is seem laughing and coughing up blood, and is later found dead, although it is unclear if he was trampled to death or choked to death of his own blood. As that could be too graphic for the film, it plays out differently. After Katniss kills Coin, Snow roars with laughter, but no blood is seen. As Katniss is dragged away, Snow can be seen being pulled down from his stake by the crowd and vanishes among them, so it can be assumed that he was beaten to death in the ensuring riot.
 * In the novel, the epilogue takes place 15 years after the events of Mockingjay, and Katniss and Peeta's children are playing together, her daughter likely in her early teens while their son is growing out of his toddler stage. In the film, less time appears to have passed, as their children are much younger.
 * Due to the death of Philip Seymour Hoffman, Plutarch does not interact with Katniss to inform her that she is going home after she had murdered Coin, as well as his speech about a changing Panem. Instead, this information is relayed to Katniss by Haymitch, who reads a letter Plutarch wrote to Katniss because he was unable to see her in person.