Martin Jenkins is an environmental consultant. He has been involved as writer and/or adviser in the production of many technical books on conservation matters, as well as the Walker non-fiction titles Wings, Stings and Wriggly Things in the Bright Sparks series, Fly Traps! Plants that Bite Back, runner-up for the 1996 TES Junior Information Book Award, Chameleons Are Cool and Informania: Vampires. Jane Chapman, who does all her painting in the kitchen and has a 70-year-old tortoise (which is now a family heirloom!), is also the illustrator of the non-fiction bestseller Tigress.