Katniss Everdeen she experienced when her father was fighting in the Vietnam War. In the novels, Katniss is extensively knowledgeable in foraging, wildlife, hunting, and survival techniques. Collins knew some of this background from her father, who grew up in the Great Depression and was forced to hunt to augment a scanty food supply, although Collins saw her father bring home food from the wild during her own childhood as well. In addition, Collins researched the subject using a large stack of wilderness survival guidebooks. Katniss and the other tributes are, in their time before participating in their Hunger Games, compelled to
The Hanging Tree (The Hunger Games song) days" during the month of September 2013. Lawrence later contacted both Schultz and Fraites via text message that the melody was chosen for the film, saying, "It worked out great in the movie. We just shot the scene. Jen was really nervous but it went great." The lead protagonist Katniss Everdeen performs the song in the film, which is also heard over the closing credits. Jennifer Lawrence revealed on "Late Night with David Letterman" that she was anxious about singing the song in the film, citing her fear of "singing in front of other people" as her reason; she also