How do birds learn how to sing? What brings summer after spring? What turns the leaves from green to brown and sends them floating gently down? In thirteen engaging couplets, Marcus Pfister opens children's eyes to the wondrous mysteries all around them. AUTHOR: From Penguin Pete to Hopper the bunny to Bertie the young hippo to the international celebrity Rainbow Fish, his characters have charmed children and their caregivers the world around. For Marcus, "a good book acts as a bridge between a child and an adult, sparking lots of questions, and expanding the imagination of the child." Marcus Pfister lives in Berne, Switzerland.