Trivia: The scenes with the flying dinosaurs were supposed to be in the original movie, as it was part of the book Jurassic Park, but Spielberg decided not to include this in the first movie due to budget restraints.
Trivia: Dr. Grant's brown truck with the Museum of the Rockies and Montana State University logos on it is the actual vehicle that belongs to Dr. Jack Horner, paleontologist consultant on the Jurassic Park films as well as the man that the character of Grant is based on.
Trivia: In the bar scene you can see a Jurassic Park pinball machine.
Answer: The island was located west of Costa Rica in the pacific so its likely they are headed for the Americas or Galapagos islands. They won't likely start hunting on animals and humans as they are thought to be fish eaters and thus would stay near the coast and avoid contact with land animals, especially predators. The reason they attack the humans in the bird cage is because of malnutrition and captivity related stress.
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