Russell uses chocolate to lure Kevin, the giant flightless bird, in the 2009 Pixar film Up. Kevin loves chocolate so much that she tries to take a bite out of Russells chocolate bar and can be lured using chocolate. Russell befriends Kevin by offering her chocolate, and Kevin is willing to follow Russell and Carl wherever they go. In the end, Russell and Carl are able to save Kevin from Charles Muntz and help her return to her home in Paradise Falls. Kevin is so grateful to Russell that she gives him a chocolate feather as a gift.

Although one of the search results mentions a Twitter poll where blueberries, breadcrumbs, and ice cream were also options, the majority of the sources confirm that Russell uses chocolate to lure Kevin.