Hen is sitting on an egg, waiting for it to hatch. But it's no ordinary egg - it's enormous, and suddenly a blue claw pokes out Oxford Reading Tree Story Sparks is an emotionally-engaging fiction series that will fire children's imaginations and develop their comprehension skills. The variety of authors and illustrators broadens children's reading experience, with something to appeal to every child. This story is one of six titles at Oxford Level 1+, which are phonically decodable with some extra high-interest words to expand children's vocabularies and enrich the stories. All the books in the series are carefully levelled, making it easy to match every reader to the right book.