In this nonfiction picture book, a stream narrates its own natural history as it flows from its headwaters in the mountains to its mouth in the lowlands, introducing the plants and animals that line its banks and live in its waters. The poetic story, combining lyricismwith natural history excellence, is augmented and enriched by informativesidebars and backmatter. Birds, mammals, amphibians, and insects peek out from the beautiful, scientifically accurate illustrations.