Jarvis is the author-illustrator of the Bear and Bird chapter book series. He also created Alans Big, Scary Teeth; Tropical Terry; Follow Me, Flo!; and The Boy with Flowers in His Hair, among other picture books, and is the illustrator of Pick a Pine Tree, Pick a Pumpkin, and Pick a Perfect Egg, all by Patricia Toht, as well as Oh, Are You Awake? by Bob Shea. An animator who has worked as a record jacket designer and an animation director, he lives in Manchester, England.