(3) K-3 Tiny Habitats series. This informative picture book describes how a bison’s “steamy poo pile” becomes an important part of a prairie ecosystem. Over the course of a year, insects eat and lay eggs inside it; toads, turtles, and birds come to eat the bugs; flowers and grasses grow in the enriched soil. In the spring, a poo pile from a baby bison begins the cycle anew. Mixed-media illustrations depict the variety of life on the prairie; speech bubbles add personality (“Mmm, these roots are tangy!” muses a munching prairie dog). More background, a bibliography, and further reading are appended.

Reviewer: Rachel L. Kerns