Jurassic Park III dinosaur-bird connection, said the feathers quills added to the "Velociraptor" for "Jurassic Park III" "looked like a roadrunner's toupee", but conceded that feathers are difficult subjects for computer animation and speculated that "Jurassic Park IV"'s raptors would have more realistic with plumage. In 2002, Crichton said he had not watched the film. A teaser trailer was released online in September 2000. Universal avoided excessive early marketing to prevent a possible backlash; the studio believed awareness of the film was already sufficient. Marketing began in April 2001, three months before the film's release. The first footage from the film was aired
Jurassic Park (film score) described it as an, "adventure theme, high-spirited and brassy, thrilling and upbeat musically." The original version of "Journey to the Island" also consists of "Theme from Jurassic Park." Variations of "Theme from Jurassic Park" and "Journey to the Island" are used for the score's quieter, more tender moments, typically with woodwinds, horns, or keyboards. Williams stated that these leitmotifs were reused in order to make the pieces become an overarching theme for the park itself, "which could be used in several different places, and when orchestrated differently, could convey the beauty of what they were seeing at first." A third