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...