"O, a cow is a cow . . . a pig is a pig . . . a tree is a tree . . . . Life is . . . better and better the more that we see." So, sing two songbirds as they joyfully wing their way through a cloud-filled sky. And what interesting shapes those clouds are! There's a cow-shaped cloud, a pig-shaped one, a tree-shaped cloud, and so much more. As kids turn the pages and read the sweet, simple rhyme, they will see the birds soar past all kinds of wispy and whimsical clouds. The Cloud Song, by beloved author Margaret Wise Brown with beautiful, evocative art by P. S. Brooks, encourages kids to let their imaginations fly.