Dinotopia — Scott Ciencin

During a mutiny on a prison ship, two boys are tossed overboard. Now they are stranded on Dinotopia. Raymond is the son of the ship's surgeon. He immediately takes to this strange new world and befriends a wounded Skybax named Windchaser. But Hugh, a London pickpocket, believes he'll never fit into this paradise. While Raymond helps Windchaser improve his shaky flying, Hugh forms a sinister plan. Soon all three are headed into a dangerous adventure that will test both their courage and their friendship...