Watership Down political sensibilities of the 1990s when it was published. In 1978 Martin Rosen wrote and directed an animated film adaptation of "Watership Down". The voice cast included John Hurt, Richard Briers, Harry Andrews, Simon Cadell, Nigel Hawthorne, and Roy Kinnear. The film featured the song "Bright Eyes", sung by Art Garfunkel. Released as a single, the song became a UK number one hit. Although the essentials of the plot remained relatively unchanged, the film omitted several side plots. Though the Watership Down warren eventually grew to seventeen rabbits, with the additions of Strawberry, Holly, Bluebell, and three hutch rabbits liberated
Watership Down (film) rendered in a narrated simple cartoon fashion, the animation style changes to a detailed, naturalistic one. There are concessions to render the animals anthropomorphic only to suggest that they have human voices and minds, some facial expressions for emotion, and paw gestures. The animation backgrounds are watercolors. Only one of the predators, the farm cat Tab, is given a few lines, the rest remaining mute. The backgrounds and locations, especially Efrafa and the nearby railway, are based on the diagrams and maps in Richard Adams's original novel. Most of the locations in the movie either exist or were based on