Everything in nature grows up — just like you and me! It's springtime, and the local pond is bursting with new life. Shiny black pollywogs are growing into fat frogs, and baby robins hatch from pale blue eggs. The blackberry bushes are full of sweet, juicy berries, and new monarch butterflies emerge from their cocoons. Listen closely, and you can hear the cheeping ducklings announcing, "Spring is here!" Anne Rockwell and Holly Keller, two beloved children's book creators, team up to celebrate this season of growth.