Katy S. Duffield

This powerful nonfiction picture book explores wildlife crossings around the world and how they are helping save thousands of animals every day. Around the world, bridges, tunnels, and highways are constantly being built to help people get from one place to another. But what happens when construction spreads over, under, across, and through animal habitats? Thankfully, groups of concerned citizens,...

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...