We Are the Keystones: Animals That Hold Habitats Together

Meet keystone species—the hidden heroes of the natural world—and learn about the ecosystems they support in this “enchanting…engaging” (School Library Journal, starred review) nonfiction picture book from the author of Crossings: Extraordinary Structures for Extraordinary Animals.

Keystone species are plants, animals, or other organisms that have a huge effect on the environments around them. From beavers to elephants, alligators to hummingbirds, keystones help themselves and other species s...